Question 1

From Peninsula, Island, Bay and Cape, identify the odd geographical feature based on whether it is mainly land or water.

Accepted Answer

Introduction / Context: This general knowledge reasoning question deals with basic geographical terms. You are asked to find which term among the four does not belong to the same category when classified by whether it primarily describes land or water. Three of the terms describe landforms surrounded by water in different ways, while one describes a water body. Recognizing these classifications is important in geography based aptitude questions. Given Data / Assumptions: The terms given are Peninsula, Island, Bay and Cape. Peninsula, Island and Cape are mainly landforms. Bay is a water body that indents into the land. We work with standard school level definitions of these geographic features. Concept / Approach: The key concept is to decide whether each term refers to land surrounded by water or water surrounded by land. Peninsula, Island and Cape all refer to pieces of land protruding into water in different shapes. Bay refers to a broad inlet of the sea where water extends into the land. Therefore, Bay belongs to the category of water bodies, while the others are land based, making Bay the odd one out. This land versus water classification is a simple and reliable way to solve the question. Step-by-Step Solution: Step 1: A Peninsula is a piece of land almost surrounded by water or projecting into a body of water, but it remains connected to a larger landmass on one side. Step 2: An Island is a piece of land that is completely surrounded by water and is not connected to the mainland by land. Step 3: A Cape is a pointed piece of land that projects into a sea, ocean or large lake and is surrounded by water on three sides. Step 4: A Bay is a broad inlet of the sea or a lake where the water body curves inward into the land. Step 5: Thus, Peninsula, Island and Cape all describe land surrounded by water in different proportions. Step 6: Bay, however, describes water extending into land rather than land projecting into water. Step 7: Therefore, Bay is the odd geographic feature among the four options. Verification / Alternative check: As a quick check, ask which of the terms could be walked on as land completely when standing on the shore: you can stand on a Peninsula, an Island or a Cape since all are land. In contrast, Bay refers primarily to the body of water, not to a landmass. This confirms that Bay is categorically different and fits best as the odd one out. Why Other Options Are Wrong: Peninsula is not the odd term because it is a landform extending into water. Island is not the odd term because it is also a landform, fully surrounded by water. Cape is not the odd term because it too is a landmass that projects into water. Bay is the odd term because it is primarily a water body that cuts into the land. Common Pitfalls: Some learners may treat all four terms as similar simply because they happen near coasts and involve both land and water. Another pitfall is confusion between Cape and Bay, since both appear on coastal maps and may look similar in outline. To avoid confusion, always ask whether the definition emphasizes land projecting into water or water extending into land. Final Answer: The geographical feature that refers mainly to a water body rather than a landform and is therefore the odd one out is Bay.

Question 2

From Tomato, Potato, Carrot and Radish, identify the odd item based on whether it is primarily a root vegetable.

Accepted Answer

Introduction / Context: This reasoning question is based on basic knowledge of vegetables and plant parts. You are asked to find which item among the four does not belong to the same category when classified by the part of the plant that is eaten. Three of the given items are root vegetables that grow beneath the soil, while one is primarily a fruit in botanical terms that grows above the ground. Recognizing this classification helps in everyday science and general knowledge questions. Given Data / Assumptions: The items listed are Tomato, Potato, Carrot and Radish. Potato, Carrot and Radish are commonly grouped as underground root or root like vegetables in daily usage. Tomato is the fleshy fruit of the tomato plant that grows above the ground. We classify each item by the main plant part that is consumed. Concept / Approach: The key concept is the difference between root vegetables and above ground fruits. Carrot and Radish are tap roots eaten directly, while Potato is a tuber, a swollen underground stem, which is functionally similar to a root vegetable in everyday categorization. Tomato, however, is a fruit that develops from the flower and hangs on the plant above the soil. Therefore, Tomato belongs to a different category and is the odd one out in this group. Step-by-Step Solution: Step 1: Carrot is a root vegetable where the orange tap root is eaten. It grows underground and stores nutrients for the plant. Step 2: Radish is also a root vegetable, where the swollen white or red root grows beneath the soil and is consumed as food. Step 3: Potato is a tuber, which is a thickened underground stem that stores starch. Although technically a stem, it is grouped with root vegetables because it is harvested from under the soil. Step 4: Tomato is the edible fruit of the tomato plant. It develops from the flower, contains seeds and grows above ground on the plant. Step 5: In everyday categorization, Carrot, Radish and Potato are all considered underground vegetables, while Tomato is a fruit like structure growing above the ground. Step 6: Since the question is about finding the odd one out, the item that does not share the underground root or root like nature is Tomato. Verification / Alternative check: Imagine harvesting these plants. To obtain Carrots, Radishes and Potatoes, you mainly dig into the soil to collect the edible part. To collect Tomatoes, you pick them from the branches of the plant above ground. This difference in where the edible part grows confirms that Tomato is categorically different from the others in the list. Why Other Options Are Wrong: Potato is not the odd item because it is an underground tuber, similar in usage to root vegetables. Carrot is not the odd item because it is a classic root vegetable that grows beneath the soil. Radish is not the odd item because it is also an underground root vegetable. Tomato is the odd item because it is an above ground fruit of the plant rather than an underground root or tuber. Common Pitfalls: A common confusion is that all four are often grouped as vegetables in cooking, which can hide the botanical difference. Some learners may incorrectly think that Potato is more different because it is a tuber, but in practice it behaves like an underground vegetable similar to Carrot and Radish. To answer correctly, focus on whether the edible part grows above or below ground and whether it is a root like structure or a fruit. Final Answer: The item that is not primarily an underground root or tuber and is therefore the odd one out is Tomato.

Question 3

In this aptitude reasoning question on numerical pairs, find the odd number pair in which the relationship between the two numbers does not follow the same pattern as in the other options.

Accepted Answer

Introduction / Context: This aptitude question tests the ability to identify the odd number pair based on a hidden numerical pattern. Such odd one out questions are common in competitive exams because they quickly check whether a student can compare several pairs and discover a consistent rule. Here, four pairs of numbers are given, and you must decide which pair does not follow the same relationship between the first and second number. Given Data / Assumptions: - Four number pairs are given as options.- The correct answer is the pair that does not fit the common rule followed by the other three pairs.- All calculations are done using simple operations like addition and subtraction. Concept / Approach: The standard approach in such questions is to look for a numerical pattern that works for most of the pairs. A very common pattern is to check the difference between the two numbers in each pair. If three pairs show a similar type of difference and one pair does not, that different pair is the odd one out. We will therefore compare the differences between the numbers in each pair. Step-by-Step Solution: Step 1: For 41 - 72, the difference is 72 - 41 = 31.Step 2: For 12 - 30, the difference is 30 - 12 = 18.Step 3: For 51 - 42, the difference is 51 - 42 = 9.Step 4: For 11 - 20, the difference is 20 - 11 = 9.Step 5: Observe that in three pairs (12 - 30, 51 - 42, 11 - 20) the absolute differences are multiples of 9 (18, 9, 9), whereas in 41 - 72 the difference is 31, which is not a multiple of 9. Verification / Alternative check: You can quickly recheck the pattern by focusing only on the size of the difference. If you divide 18, 9, and 9 by 9, you get whole numbers. When you divide 31 by 9, you do not get a whole number. This confirms that exactly three pairs share the same rule and one pair does not. Why Other Options Are Wrong: 12 - 30: Difference is 18, which is a multiple of 9, so it fits the pattern.51 - 42: Difference is 9, also a multiple of 9, so it follows the same rule.11 - 20: Difference is 9, again a multiple of 9, so it fits the pattern. Common Pitfalls: Many students try unnecessary operations like squares or products and overlook the simple difference pattern. Some also make calculation mistakes while subtracting, which may lead them to mark the wrong pair as the odd one out. Always check subtraction carefully. Final Answer: The only pair whose difference is not a multiple of 9 is 41 - 72, so it is the odd number pair.

Question 4

In this verbal reasoning aptitude question, select the odd word from the following options based on whether the object is a natural satellite or a planet in the solar system.

Accepted Answer

Introduction / Context: This question belongs to the verbal reasoning category where you must pick the odd word based on classification. All the given words are names from astronomy, but one of them belongs to a different category compared to the others. Recognizing categories such as planet, star, satellite, and so on is a common test of basic general knowledge and logical grouping in aptitude exams. Given Data / Assumptions: - The given options are Moon, Mars, Saturn, and Pluto.- All four names are related to space and the solar system.- You need to find the one option that does not belong to the same class as the other three. Concept / Approach: The usual approach is to identify a shared property that three of the options have in common, such as all being planets, and then check which remaining item lacks that property. We must use commonly accepted classifications rather than outdated or controversial ones so that the logic remains clear for exam purposes. Step-by-Step Solution: Step 1: Mars is a planet in our solar system.Step 2: Saturn is also a planet, known for its ring system.Step 3: Pluto, while reclassified scientifically as a dwarf planet, is still treated in many basic reasoning questions as a planetary body similar in category to planets.Step 4: The Moon is not a planet. It is the natural satellite of the Earth.Step 5: Thus, three options represent planetary type bodies, while one represents a natural satellite. Verification / Alternative check: Another way is to think in terms of what each body orbits. Mars, Saturn, and Pluto all orbit the Sun directly. The Moon, however, orbits the Earth and not the Sun directly. This confirms that the Moon belongs to a different category. Why Other Options Are Wrong: Mars: A recognized planet that orbits the Sun, so it matches Saturn and Pluto.Saturn: A gas giant planet with rings, clearly part of the planet group.Pluto: Though classed as a dwarf planet now, it is still used as a planetary body in such reasoning questions. Common Pitfalls: Students sometimes overthink the Pluto classification debate and get confused. For exam reasoning, remember that the key contrast here is between planets and a natural satellite. Focusing on that simple idea makes the question straightforward. Final Answer: The odd word is Moon because it is a natural satellite, while the others are planetary bodies.

Question 5

In this letter sequence reasoning question, select the odd group of letters from the following options based on the pattern in the alphabetical positions.

Accepted Answer

Introduction / Context: This is a typical letter series odd one out question from logical reasoning. Each option is a group of three letters, and you must find which group does not follow the same alphabetic pattern as the others. These questions test your familiarity with alphabetical positions and your ability to see consistent steps between letters in a group. Given Data / Assumptions: - The letter groups are DFH, KMO, QTW, and SUW.- All letters are from the English alphabet.- The pattern is most likely based on positions and gaps between consecutive letters. Concept / Approach: The standard technique is to convert each letter into its alphabet position and then examine the differences between successive letters. When three groups show the same difference and one group shows a different difference, that different group is the odd one out. This approach is systematic and avoids guesswork purely based on appearance. Step-by-Step Solution: Step 1: For DFH, D is 4, F is 6, H is 8. Differences are +2 and +2.Step 2: For KMO, K is 11, M is 13, O is 15. Differences are again +2 and +2.Step 3: For QTW, Q is 17, T is 20, W is 23. Here, the differences are +3 and +3.Step 4: For SUW, S is 19, U is 21, W is 23. Differences are +2 and +2.Step 5: Three groups have a constant step of 2 between letters, but one group has a constant step of 3. Verification / Alternative check: Rechecking quickly, you can see that DFH, KMO, and SUW are of the form x, x+2, x+4, while QTW is of the form x, x+3, x+6. This confirms that QTW does not match the pattern followed by the other three groups. Why Other Options Are Wrong: DFH: Clearly follows a +2, +2 pattern.KMO: Also follows a +2, +2 pattern in letter positions.SUW: Again shows the same incremental pattern of +2 and +2. Common Pitfalls: Some students look only at the shapes of letters or try to see vowels and consonants instead of calculating positions. The safest method is always to convert letters to numbers and use arithmetic differences to find the pattern. Final Answer: The odd letter group is QTW because it uses a step of 3 between letters instead of a step of 2.

Question 6

In this numerical reasoning question on perfect powers, select the odd number from the following options based on whether it is a perfect square.

Accepted Answer

Introduction / Context: This question checks your understanding of perfect squares and perfect powers. You are given four numbers and asked to choose the one that does not belong with the others. Such odd number questions are common in aptitude tests because they assess basic number sense and knowledge of square numbers without involving long calculations. Given Data / Assumptions: - The options are 25, 49, 9, and 8.- All values are small integers suitable for quick mental checking.- The most natural classification to test here is whether the numbers are perfect squares. Concept / Approach: A perfect square is a number that can be written as n^2 for some integer n. Many exam questions use familiar squares such as 3^2, 5^2, and 7^2. The general strategy is to express each option as a square, if possible. The number that cannot be expressed as a perfect square, while the others can, will be the odd one out. Step-by-Step Solution: Step 1: 25 = 5^2, so it is a perfect square.Step 2: 49 = 7^2, so it is also a perfect square.Step 3: 9 = 3^2, another perfect square.Step 4: 8 is equal to 2^3 and is a perfect cube, not a perfect square.Step 5: Since three numbers are perfect squares and one is not, the non square is the odd number. Verification / Alternative check: You can list basic squares up to 10^2: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100. In this list, 9, 25, and 49 clearly appear, but 8 does not. That quick check confirms that 8 is not a perfect square. Why Other Options Are Wrong: 25: Lies in the square list as 5^2.49: Lies in the square list as 7^2.9: Lies in the square list as 3^2. Common Pitfalls: Some students confuse perfect cubes with perfect squares or rely only on memory without verifying. Always check by seeing if the number fits the pattern n^2. If not, do not assume it is a square. Final Answer: The odd number is 8 because it is a perfect cube, not a perfect square like the other three options.

Question 7

In this classification question on everyday objects, select the odd word from the given options based on the usual physical shape of the object.

Accepted Answer

Introduction / Context: This verbal reasoning question asks you to select the odd word from a list of familiar objects. The test here is whether you can recognize a common physical characteristic shared by most of the objects and then find the one that does not fit that characteristic. Such questions appear frequently in aptitude tests to measure basic observation skills and classification ability. Given Data / Assumptions: - The given options are Book, Tyre, Bangle, and Compact disk.- All are everyday objects that people see or use in normal life.- The likely basis of classification is the outer physical shape. Concept / Approach: A simple strategy is to think about the usual geometric form of each object. Tyres, bangles, and compact disks are generally circular or ring shaped. A book, however, is usually rectangular or nearly rectangular in shape. The odd one out will be the object that does not share the common circular property with the others. Step-by-Step Solution: Step 1: A tyre is circular and has a ring like shape.Step 2: A bangle is also a circular ring worn around the wrist.Step 3: A compact disk is round in shape, designed to be a flat circle.Step 4: A book is normally rectangular, with straight edges and four corners.Step 5: Three objects share the circular or ring property, while one does not. Verification / Alternative check: You can visualize placing each object on a table and tracing its outline. The tyre, bangle, and compact disk will create circular outlines. The book will create a four sided rectangular outline. This confirms that the book is different in shape from the other three. Why Other Options Are Wrong: Tyre: Clearly circular in cross section.Bangle: Also circular in form.Compact disk: A perfectly circular disk. Common Pitfalls: Some learners get distracted by material or use rather than shape. The question is best answered by focusing on the most obvious common feature, which is the round outline of three of the objects. Final Answer: The odd word is Book because it is not circular, unlike the tyre, bangle, and compact disk.

Question 8

In this alphabet pattern question, select the odd group of letters from the given alternatives based on whether the sequence is increasing or decreasing.

Accepted Answer

Introduction / Context: This question tests your understanding of alphabetical order and direction of movement within letter groups. You are asked to select the odd group of letters from four options. Three groups follow a similar pattern in terms of whether the letters go forward or backward in the alphabet, and one group breaks this pattern. This type of problem frequently appears in the series and coding section of aptitude exams. Given Data / Assumptions: - The letter groups are NML, EDC, QRS, and WVU.- All groups consist of three consecutive letters in some order.- The pattern is likely related to moving forward or backward through the alphabet. Concept / Approach: A reliable approach for such questions is to write down the alphabetical positions and see whether the letters are arranged in increasing or decreasing order. If three groups are in one direction and one is in the opposite direction, that opposite one will be the odd group. The concept is simple but requires careful attention to avoid mistakes in letter positions. Step-by-Step Solution: Step 1: NML uses letters N, M, L. Positions are 14, 13, 12. This is a decreasing sequence.Step 2: EDC uses letters E, D, C. Positions are 5, 4, 3. Again, a decreasing sequence.Step 3: QRS uses letters Q, R, S. Positions are 17, 18, 19. This is an increasing sequence.Step 4: WVU uses letters W, V, U. Positions are 23, 22, 21. This is a decreasing sequence.Step 5: Three groups NML, EDC, and WVU are in strictly decreasing alphabetical order, whereas QRS is in increasing order. Verification / Alternative check: You can also check quickly by reciting alphabet segments aloud. For example, you say N, M, L backward, E, D, C backward, and W, V, U backward, but Q, R, S is naturally spoken forward, which highlights the difference. Why Other Options Are Wrong: NML: Decreases step by step.EDC: Also a decreasing sequence.WVU: Another decreasing sequence. Common Pitfalls: Students sometimes look at whether letters are consecutive but forget to check direction. All four groups are consecutive sequences, but only direction separates the odd group from the others. Final Answer: The odd group is QRS because it is arranged in increasing alphabetical order, unlike the other three groups which are decreasing.

Question 9

In this number classification question, select the odd number from the given alternatives based on divisibility properties.

Accepted Answer

Introduction / Context: This is a basic arithmetic odd one out question that checks your understanding of divisibility rules. You are given four numbers and must decide which number does not share a common divisibility property with the others. This type of problem is frequently seen in aptitude tests because it can be solved quickly if you are familiar with divisibility by small integers like 2, 3, 5, and 9. Given Data / Assumptions: - The numbers given are 18, 45, 54, and 55.- All numbers are two digit integers.- We are looking for a common divisibility rule that applies to three of them but not to one. Concept / Approach: One of the quickest checks is divisibility by 9 or by 3 using digit sum rules. A number is divisible by 3 if the sum of its digits is a multiple of 3. The same digit sum rule with multiples of 9 works for divisibility by 9. We try these simple checks first because they are fast and often used in competitive exam questions. Step-by-Step Solution: Step 1: For 18, the sum of digits is 1 + 8 = 9, which is a multiple of 3, so 18 is divisible by 3.Step 2: For 45, the sum of digits is 4 + 5 = 9, again a multiple of 3, so 45 is divisible by 3.Step 3: For 54, the sum of digits is 5 + 4 = 9, so 54 is also divisible by 3.Step 4: For 55, the sum of digits is 5 + 5 = 10, which is not a multiple of 3, so 55 is not divisible by 3.Step 5: Thus, three numbers are divisible by 3 and one is not. Verification / Alternative check: You can divide each number by 3 directly. 18 / 3 = 6, 45 / 3 = 15, 54 / 3 = 18, all whole numbers. However, 55 / 3 gives a non integer result. This confirms that 55 breaks the common divisibility pattern. Why Other Options Are Wrong: 18: Multiples of 3 and fits the pattern.45: Also a multiple of 3, so it fits.54: Clearly divisible by 3, again fitting the group. Common Pitfalls: Some students focus only on even and odd status, but here both even and odd numbers appear among those divisible by 3. Looking only at parity will not give a clear answer, so divisibility rules are essential. Final Answer: The odd number is 55 because it is not divisible by 3, whereas the other three numbers are.

Question 10

In this sports based classification question, select the odd word from the given cricket related options.

Accepted Answer

Introduction / Context: This question is a simple classification problem drawn from the domain of cricket. All four words refer to familiar roles or positions associated with a cricket match. You must identify which word does not belong to the same group as the others. Such general knowledge based reasoning questions check whether you can quickly categorize roles and distinguish participants from officials. Given Data / Assumptions: - The options are Batsman, Umpire, Bowler, and Wicket-keeper.- All four terms are connected to the game of cricket.- The likely basis of classification is whether the term represents a player or an official. Concept / Approach: In a typical cricket match, there are players on the field and there are match officials. Batsman, bowler, and wicket keeper are playing roles in a team, while the umpire is responsible for decision making and rule enforcement. The odd one out is therefore the only non player role in the list. Step-by-Step Solution: Step 1: A batsman is a player who faces the ball and attempts to score runs.Step 2: A bowler is a player who delivers the ball to the batsman.Step 3: A wicket keeper is also a player, positioned behind the stumps to catch and stump.Step 4: An umpire is not a player but an official who supervises the match and makes decisions on dismissals, boundaries, and other rules.Step 5: Three options describe on field players, while one describes a match official. Verification / Alternative check: Imagine the team sheet. The batsman, bowler, and wicket keeper are included in the playing eleven. The umpire is listed separately as an official appointed by the cricket board. This mental picture confirms the classification. Why Other Options Are Wrong: Batsman: Clearly a player role.Bowler: Also a core player role.Wicket-keeper: Another playing position on the team. Common Pitfalls: Sometimes students think only in terms of fielding or batting roles and forget that officials are not part of the team. Remember that the odd one can come from outside the main group, not just from a different playing position. Final Answer: The odd word is Umpire because it refers to an official, while the other three are playing positions.

Question 11

In this letter series reasoning question, select the odd group of letters from the following alternatives based on the pattern of alphabetical jumps.

Accepted Answer

Introduction / Context: This logical reasoning question presents four groups of letters and asks you to identify the odd group. The test here is your ability to see consistent jumps between letters in the alphabet. Such questions are standard in series and coding topics, where recognizing patterns like constant differences between letter positions is important. Given Data / Assumptions: - The options are CEG, IKM, ORU, and VXZ.- Each group contains three letters arranged in alphabetical order.- The likely pattern is the difference between consecutive letter positions in the alphabet. Concept / Approach: The most systematic method is to convert each letter to its numerical position in the alphabet and then compute the differences between consecutive letters in each group. If three groups show one type of difference and one group shows a different type, that different group will be the odd one out. This technique reduces confusion and prevents random guessing. Step-by-Step Solution: Step 1: For CEG, the letters are C, E, G with positions 3, 5, 7. Differences are +2 and +2.Step 2: For IKM, the letters are I, K, M with positions 9, 11, 13. Differences are again +2 and +2.Step 3: For ORU, the letters are O, R, U with positions 15, 18, 21. Differences are +3 and +3.Step 4: For VXZ, the letters are V, X, Z with positions 22, 24, 26. Differences are +2 and +2.Step 5: Three groups CEG, IKM, and VXZ use a constant jump of 2, while ORU uses a larger jump of 3. Verification / Alternative check: You can quickly recite the sequences: C, E, G; I, K, M; and V, X, Z all skip one letter between each pair. However, O, R, U skips two letters between successive letters. This verbal check supports the numerical observation. Why Other Options Are Wrong: CEG: Follows a +2 pattern and is consistent.IKM: Also follows a +2 pattern.VXZ: Again shows the same +2 jump between letters. Common Pitfalls: Some students focus only on whether letters are consonants or vowels, but that does not help here. The important feature is how far each letter is from the next one in the alphabet. Final Answer: The odd letter group is ORU because it uses a jump of 3 between letters instead of a jump of 2.

Question 12

In this number classification question, select the odd number from the given alternatives based on prime and composite properties.

Accepted Answer

Introduction / Context: This quantitative aptitude question asks you to identify the odd number based on basic number theory, especially the concept of prime and composite numbers. Recognizing whether a number has more than two factors is a fundamental skill that appears regularly in competitive exams. Here, four numbers are given, and one of them has a different factor property from the others. Given Data / Assumptions: - The options are 42, 84, 91, and 71.- All are two digit positive integers.- The question is likely based on whether the numbers are prime or composite. Concept / Approach: A prime number has exactly two distinct positive divisors, 1 and the number itself. A composite number has more than two divisors. To solve this question, you test each option for divisibility by small primes such as 2, 3, 5, 7, and 11. The number that remains with only two factors is prime and will be the odd one out if the others are composite. Step-by-Step Solution: Step 1: 42 is even, so divisible by 2. It is also divisible by 3 and 7. Hence, 42 is composite.Step 2: 84 is even and divisible by 2, 3, 4, 6, 7, and more. So 84 is composite.Step 3: 91 is divisible by 7 because 7 multiplied by 13 gives 91. So 91 is composite.Step 4: 71 is not divisible by 2, 3, 5, 7, or 11. It has no divisors other than 1 and 71.Step 5: Therefore, 71 is a prime number, whereas the other three are composite. Verification / Alternative check: To double check, you can try dividing 71 by all primes up to its square root. The square root of 71 is slightly more than 8, so you only need to test 2, 3, 5, and 7. None of these divide 71 evenly, confirming that 71 is prime. Why Other Options Are Wrong: 42: Composite with many factors.84: Also composite with multiple divisors.91: Composite because it is 7 multiplied by 13. Common Pitfalls: A common mistake is to assume that any number ending with 1 is prime, which is not always true. Here, 91 ends with 1 but is composite. You should always check divisibility rather than rely only on endings. Final Answer: The odd number is 71 because it is prime, while the other three numbers are composite.

Question 13

Select the odd word from the given alternatives: Stream, Rivulet, River, and Valley.

Accepted Answer

Introduction / Context: This verbal reasoning question tests your ability to categorise geographical terms and identify which one does not belong in a group of related words. These types of odd one out questions are common in competitive exams and general knowledge tests because they require both vocabulary knowledge and logical classification skills. Given Data / Assumptions: The given words are Stream, Rivulet, River, and Valley. Three of these terms refer to flowing bodies of water. One term refers to a landform rather than a flow of water. We assume standard geography textbook meanings for each term. Concept / Approach: The main idea is to separate water bodies from landforms. A stream is a small flowing body of water. A rivulet is an even smaller stream, often described as a small brook. A river is a large natural stream of water flowing toward a sea, lake, or another river. A valley, however, is a low area of land between hills or mountains, often with a river or stream running through it but not itself a water body. By grouping the water bodies together, we can easily see that Valley is different and thus the odd word. Step-by-Step Solution: Step 1: Consider the word Stream. It denotes a small, narrow, flowing body of water. Step 2: Consider the word Rivulet. It refers to a very small stream or brook, which is again flowing water. Step 3: Consider the word River. It indicates a large, natural flowing watercourse that moves toward another water body. Step 4: Consider the word Valley. It describes a low area of land between hills or mountains, which may contain a river or stream, but is itself not a water body. Step 5: Group Stream, Rivulet, and River together as flowing water bodies. Step 6: Observe that Valley is a landform rather than a form of water, so it does not fit the main group. Step 7: Conclude that Valley is the odd word out among the four options. Verification / Alternative check: A simple verification is to ask, can this word be described as water itself or as land. Stream, Rivulet, and River all describe water in motion. They can be described entirely in terms of water volume, flow, and direction. Valley, in contrast, refers to a feature of the landscape. Water may flow through a valley, but the valley remains defined by the land shape, not by water. This conceptual separation confirms that Valley is the different term in the list. Why Other Options Are Wrong: Stream is a flowing water body and falls into the same category as Rivulet and River, so it is not the odd one out. Rivulet is simply a smaller form of a stream, again a water body, and thus fits the main pattern of the group. River is a larger flowing water body and clearly belongs with Stream and Rivulet, not with Valley as a landform, so it is not the odd option. Common Pitfalls: Some students may confuse Valley with water because many valleys have rivers flowing through them and are frequently depicted with water in pictures. This can cause them to see all four words as water related and miss the difference. Another mistake is to focus on size only, trying to order Stream, Rivulet, and River by size and forgetting to classify Valley properly. To avoid such errors, always think about the core definition of each word. Ask whether it is primarily about water or primarily about land. This method will guide you to the correct odd one out in geography related questions. Final Answer: The odd word is Valley.

Question 14

Select the odd number from the given alternatives: 49, 25, 8, and 36.

Accepted Answer

Introduction / Context: This is another number classification question where you are asked to pick the odd number out of a set. The pattern here is based on identifying perfect squares and comparing them with a perfect cube. Such problems test knowledge of basic arithmetic properties and your ability to organise numbers into familiar categories like squares and cubes. Given Data / Assumptions: The numbers provided are 49, 25, 8, and 36. We expect that three numbers will share one property, such as being perfect squares, while one number will have a different property. We assume understanding of perfect squares (n^2) and perfect cubes (n^3) for small integers. No advanced mathematics is needed, only knowledge of multiplication tables up to at least 10. Concept / Approach: The strategy is to check whether each number can be expressed as the square of an integer or the cube of an integer. 49, 25, and 36 are familiar as square numbers: 7^2, 5^2, and 6^2. Meanwhile, 8 is known as 2^3, a perfect cube and not a square. By identifying this distinction, we can classify three numbers as squares and one number as a cube, making the cube the odd one out. Step-by-Step Solution: Step 1: Check 49. We know 7 * 7 = 49, so 49 is a perfect square, equal to 7^2. Step 2: Check 25. We know 5 * 5 = 25, so 25 is a perfect square, equal to 5^2. Step 3: Check 36. We know 6 * 6 = 36, so 36 is a perfect square, equal to 6^2. Step 4: Check 8. We know 2 * 2 * 2 = 8, so 8 is a perfect cube, equal to 2^3, and not a square. Step 5: Group 49, 25, and 36 as perfect squares of integers. Step 6: Recognise that 8 is different because it is a cube and not a square. Step 7: Conclude that 8 is the odd number among the given alternatives. Verification / Alternative check: To verify, list the squares of integers: 5^2 = 25, 6^2 = 36, and 7^2 = 49, all appearing in the options. Next, list small cubes: 2^3 = 8, 3^3 = 27, and so on. Only 8 from this cube list appears among the options. Thus, three options clearly appear in the square list and one in the cube list. This classification confirms that 8 is the only cube and therefore the odd one out. Why Other Options Are Wrong: 49 is a perfect square (7^2) and fits the square number pattern along with 25 and 36, so it is not the odd one out. 25 is also a perfect square (5^2) and belongs to the same category as 49 and 36. 36 is another perfect square (6^2) and clearly matches the group of square numbers, so it cannot be the different choice. Common Pitfalls: A common mistake is to focus on parity, that is, whether numbers are even or odd. Here 49 and 25 are odd while 8 and 36 are even, which does not give a single unique odd one out. Another mistake is to confuse 8 with 9, because 9 is a square (3^2) while 8 is not. To avoid such errors, it is useful to memorise both squares and cubes of small integers. This knowledge helps you quickly classify numbers and select the correct option in odd one out questions without guesswork. Final Answer: The odd number is 8.

Question 15

Select the odd word from the given alternatives: Apple, Mango, Orange, and Almond.

Accepted Answer

Introduction / Context: This verbal reasoning question is based on categorising foods and identifying the odd one out. The options mix common fruits with a nut or dry fruit. Your task is to separate the items based on their broad food category. Such questions are intended to check vocabulary knowledge and classification skills in everyday contexts like food and nutrition. Given Data / Assumptions: The words given are Apple, Mango, Orange, and Almond. Apple, Mango, and Orange are commonly known as fresh fruits. Almond is a type of nut or dry fruit, not a juicy fruit. The question expects you to group similar items, that is, juicy fruits versus nuts or dry fruits. Concept / Approach: The best approach is to think of each item as you would find it in a fruit market or in dietary categories. Apple, Mango, and Orange all belong to the group of fleshy, juicy fruits usually eaten fresh or used in juices. Almond, on the other hand, is a nut that is dry, hard, and usually eaten as a dry fruit or used in garnishing. By classifying each item as either fruit or nut, you can easily identify the odd one out. Step-by-Step Solution: Step 1: Consider Apple. It is a fleshy fruit grown on trees and eaten fresh or used in juices and desserts. Step 2: Consider Mango. It is also a fleshy fruit, often called the king of fruits, eaten fresh or used for juices and pickles. Step 3: Consider Orange. It is a citrus fruit, also juicy and fleshy, commonly used for fresh eating and juice. Step 4: Consider Almond. It is an edible seed of the almond tree, typically classified as a nut or dry fruit, not a fleshy fruit. Step 5: Group Apple, Mango, and Orange together as fleshy, juicy fruits. Step 6: Notice that Almond belongs to a different category as a nut or dry fruit. Step 7: Conclude that Almond is the odd word out among the given alternatives. Verification / Alternative check: You can verify by imagining how each item is stored and sold. Apples, mangos, and oranges are kept with fresh fruits in a market, often on open fruit stalls. Almonds, by contrast, are usually sold in the dry fruits or nuts section, often pre packed or stored in jars. Additionally, apples, mangos, and oranges contain significant juice content, while almonds are dry and oily. This difference in category and physical nature confirms that Almond is the odd one out. Why Other Options Are Wrong: Apple is a standard fleshy fruit and belongs with Mango and Orange, so it is not the odd one out. Mango is also a fleshy, juicy fruit and fits the same category as Apple and Orange. Orange is another juicy fruit and aligns with Apple and Mango, so it cannot be considered the different item here. Common Pitfalls: Some candidates may think about colours or shapes instead of food categories. For example, Apple, Mango, and Orange can have different colours, which does not help in grouping. Others might confuse Almond as a fruit because it grows on a tree, but in food classification it is treated as a nut or dry fruit. To avoid such mistakes, focus on how items are grouped nutritionally and commercially, not just on superficial properties like shape or spelling. Always ask which items are used in similar ways in diet, cooking, and markets. Final Answer: The odd word is Almond.

Question 16

Select the odd group of letters from the given alternatives: UTS, PNM, KIH, and FDC.

Accepted Answer

Introduction / Context: This question belongs to alphabetical reasoning and asks you to identify the odd group of letters. The pattern is based on how much each letter moves in the alphabet from left to right. These problems help evaluate your ability to work with letter positions and notice consistent increments or decrements in sequences. Given Data / Assumptions: The groups are UTS, PNM, KIH, and FDC. Each group contains three letters that appear to move backward in the alphabet. Exactly one group uses a different step pattern compared to the others. We assume A = 1, B = 2, ..., Z = 26 as the standard alphabetical positions. Concept / Approach: The method is to convert letters to their numeric positions and compute the difference between consecutive letters in each group. Three of the groups follow a pattern in which the first to second letter decreases by 2 positions, and the second to third letter decreases by 1 position. One group, however, decreases by only 1 position at each step. Identifying this special case allows us to mark it as the odd group. Step-by-Step Solution: Step 1: For UTS, positions are U = 21, T = 20, S = 19. The differences are 20 - 21 = -1 and 19 - 20 = -1, giving a pattern of -1, -1. Step 2: For PNM, positions are P = 16, N = 14, M = 13. The differences are 14 - 16 = -2 and 13 - 14 = -1, which is -2, -1. Step 3: For KIH, positions are K = 11, I = 9, H = 8. The differences are 9 - 11 = -2 and 8 - 9 = -1, again -2, -1. Step 4: For FDC, positions are F = 6, D = 4, C = 3. The differences are 4 - 6 = -2 and 3 - 4 = -1, also -2, -1. Step 5: Compare the patterns. PNM, KIH, and FDC all follow the -2, -1 pattern. Step 6: UTS is different because it has a -1, -1 pattern, not matching the others. Step 7: Conclude that UTS is the odd group of letters among the given alternatives. Verification / Alternative check: As a mental verification, simply say the sequences backward: U, T, S goes one step back each time in the alphabet. For P, N, M, you move from P to N skipping O, then from N to M without skipping, which corresponds to a bigger jump followed by a smaller one. The same behaviour appears in K, I, H and F, D, C. So three groups show a larger step then a smaller step, while UTS shows equal steps. This confirms that UTS is truly different in its stepping pattern. Why Other Options Are Wrong: PNM follows a -2, -1 pattern and matches KIH and FDC, so it is not the odd one out. KIH also shows the -2, -1 step, so it belongs to the main pattern group. FDC again follows the -2, -1 pattern, which aligns with PNM and KIH, so it cannot be the odd group. Common Pitfalls: Students may look only at whether letters are moving backwards and ignore the actual step size. Since all four groups move backwards, it is easy to miss the subtle difference in step pattern. Another common error is miscalculating letter positions, especially when working quickly under exam pressure. To avoid these mistakes, always compute the numeric differences carefully and compare them across all options. This discipline will help you reliably solve many alphabet sequence problems like this one. Final Answer: The odd group of letters is UTS.

Question 17

Select the odd number from the given alternatives: 24, 39, 65, and 51.

Accepted Answer

Introduction / Context: This number based odd one out question evaluates your ability to apply simple divisibility rules. The numbers are chosen so that three of them share a property related to divisibility by 3, and one does not. Recognising such patterns quickly is an essential skill in quantitative aptitude sections of competitive exams. Given Data / Assumptions: The numbers given are 24, 39, 65, and 51. Three numbers are divisible by 3 and one is not. We assume familiarity with the divisibility rule for 3: a number is divisible by 3 if the sum of its digits is divisible by 3. No complicated calculations are required beyond simple digit addition and checking divisibility. Concept / Approach: The main idea is to test each number for divisibility by 3 using the digit sum rule. This rule states that if the sum of the digits of a number is a multiple of 3, then the number itself is divisible by 3. If three numbers satisfy this property and one does not, the one that fails is the odd one out. This method is quick, reliable, and ideal for mental calculations. Step-by-Step Solution: Step 1: Take 24. Sum of digits is 2 + 4 = 6, which is divisible by 3, so 24 is divisible by 3. Step 2: Take 39. Sum of digits is 3 + 9 = 12, which is divisible by 3, so 39 is divisible by 3. Step 3: Take 51. Sum of digits is 5 + 1 = 6, again divisible by 3, so 51 is divisible by 3. Step 4: Take 65. Sum of digits is 6 + 5 = 11, which is not divisible by 3, so 65 is not divisible by 3. Step 5: Group 24, 39, and 51 as numbers divisible by 3. Step 6: Observe that 65 does not share this property and is therefore different from the rest. Step 7: Conclude that 65 is the odd number among the given options. Verification / Alternative check: You can verify the result by performing direct division. 24 divided by 3 gives 8, 39 divided by 3 gives 13, and 51 divided by 3 gives 17, all exact integers. When you divide 65 by 3, you do not get an integer result, which confirms that 65 is not divisible by 3. Both the digit sum test and direct division lead to the same conclusion that 65 is the different number. Why Other Options Are Wrong: 24 is divisible by 3 and fits the pattern shared by 39 and 51, so it is not the odd one out. 39 is also divisible by 3 and clearly belongs with the numbers that share this property. 51 is again divisible by 3 and shares the same divisibility characteristic as 24 and 39, so it cannot be considered the odd number. Common Pitfalls: Some candidates may mistakenly focus on parity, noticing that 24 is even while 39, 65, and 51 are odd, but this does not give a single unique odd one out with a strong logical basis. Others might miscalculate digit sums or rush through the check without verifying their steps. To avoid errors, always apply the digit sum method carefully and, if time allows, double check the result through direct division. Consistent practice with these simple rules will help you handle many number based reasoning questions efficiently. Final Answer: The odd number is 65.

Question 18

Select the odd word from the given alternatives: Chair, Sofa, Couch, and Television.

Accepted Answer

Introduction / Context: This is a simple verbal classification question from the odd one out category. The options mix items of furniture with a household electronic appliance. Your task is to determine which word does not refer to a seating item. These questions test everyday vocabulary and the ability to group objects by function and usage in daily life. Given Data / Assumptions: The words given are Chair, Sofa, Couch, and Television. Chair, Sofa, and Couch are pieces of furniture used for sitting. Television is an electronic appliance used for entertainment and viewing content. The question expects you to classify the words by their primary purpose in a room. Concept / Approach: The key idea is to separate seating furniture from other types of household items. Chair, Sofa, and Couch all provide seating for one or more people. Television, however, is not used for sitting; instead, it is an electronic device that people watch while seated on furniture. By grouping items according to their primary function, we can identify the odd word that does not fit the seating category. Step-by-Step Solution: Step 1: Consider Chair. A chair is a piece of furniture designed for a single person to sit on. Step 2: Consider Sofa. A sofa is a larger piece of seating furniture, typically used for two or more people to sit or recline. Step 3: Consider Couch. A couch is similar to a sofa, again used for seating and relaxing. Step 4: Consider Television. A television is an electronic device used to display visual content, such as TV shows and movies. Step 5: Group Chair, Sofa, and Couch together as seating furniture. Step 6: Recognise that Television is not furniture for sitting but an electronic appliance for entertainment. Step 7: Conclude that Television is the odd word among the four alternatives. Verification / Alternative check: To verify, imagine furnishing a living room. Chairs, sofas, and couches are all placed in a room to provide seats for people. A television is placed to be watched, but no one sits on the television itself. Another check is to ask which items belong in the category of furniture. Chair, Sofa, and Couch all clearly fit, while Television does not. This simple categorisation confirms that Television is the odd one out. Why Other Options Are Wrong: Chair is a basic seating item and is similar in function to Sofa and Couch, so it is not the odd one out. Sofa is another seating furniture piece and fits in the same category as Chair and Couch. Couch is again a seating furniture item and belongs with Chair and Sofa, so it cannot be considered the different word here. Common Pitfalls: Some candidates may become distracted by the fact that a television is often placed in the same room as chairs and sofas and therefore feel that they belong together. However, reasoning questions focus on function, not proximity. Another error is to overthink the problem and look for more subtle differences when a straightforward classification based on primary use is sufficient. To avoid these mistakes, always ask what each object is mainly used for and group items accordingly before deciding which one is different. Final Answer: The odd word is Television.

Question 19

Select the odd group of letters from the given alternatives: XVT, NPR, LJH, and FDB.

Accepted Answer

Introduction / Context: This question examines your skill in identifying patterns in letter sequences. Each option is a group of three letters, and you must find the group that does not follow the same alphabetical movement as the others. Problems of this type test your understanding of ascending and descending sequences in the English alphabet. Given Data / Assumptions: The four groups are XVT, NPR, LJH, and FDB. Each group contains three letters, arranged in a particular order. Three of the groups move backward in the alphabet, while one group moves forward. We assume standard positions in the alphabet where A = 1, B = 2, ..., Z = 26. Concept / Approach: The core idea is to check whether letters in each group are moving forwards or backwards through the alphabet and to observe the size of the step between consecutive letters. In this problem, three of the groups follow a decreasing pattern with a fixed negative step, while one of the groups follows an increasing pattern with a positive step. The sequence that differs in direction is the odd one out. Step-by-Step Solution: Step 1: For XVT, positions are X = 24, V = 22, T = 20. Differences are 22 - 24 = -2 and 20 - 22 = -2, so the pattern is -2, -2. Step 2: For NPR, positions are N = 14, P = 16, R = 18. Differences are 16 - 14 = +2 and 18 - 16 = +2, so the pattern is +2, +2. Step 3: For LJH, positions are L = 12, J = 10, H = 8. Differences are 10 - 12 = -2 and 8 - 10 = -2, giving a -2, -2 pattern. Step 4: For FDB, positions are F = 6, D = 4, B = 2. Differences are 4 - 6 = -2 and 2 - 4 = -2, again -2, -2. Step 5: Compare the directions. XVT, LJH, and FDB all move backwards through the alphabet with steps of minus 2. Step 6: NPR is the only group where the letters move forward with a step of plus 2. Step 7: Therefore, NPR is the odd group of letters among the four alternatives. Verification / Alternative check: You can verify this visually by reciting the alphabet. X, V, T involves moving backwards two letters each time. L, J, H and F, D, B show the same backward movement. In contrast, N, P, R involves moving forward two letters each time. Since three of the sets are clearly descending sequences and only one is ascending, NPR stands out as the odd one. This mental check agrees with the numerical position method. Why Other Options Are Wrong: XVT is a descending sequence with step size minus 2 and matches LJH and FDB, so it is not the odd one out. LJH also shows a backward movement in the alphabet with the same step and belongs with XVT and FDB. FDB follows the same decreasing pattern and clearly belongs to the main group, so it cannot be the different option. Common Pitfalls: A common mistake is to check only that letters are adjacent or spaced, without paying attention to whether the sequence moves forward or backward. Since all four groups show equal steps, it is easy to miss the direction difference. Another pitfall is miscounting positions, particularly near the extremes of the alphabet. To avoid these issues, always compute differences in a consistent order and note whether you are moving up or down in letter positions. Practising a few such questions will make this process more automatic and reliable. Final Answer: The odd group of letters is NPR.

Question 20

Select the odd number from the given alternatives: 1, -2, -(-3), and 5.

Accepted Answer

Introduction / Context: This question tests your understanding of integers, signs, and the concept of even and odd numbers. It presents some numbers in standard form and one in a slightly tricky form using a double negative. Your task is to simplify where needed and then identify which number has a different parity, that is, whether it is even or odd, compared to the others. Given Data / Assumptions: The given numbers are 1, -2, -(-3), and 5. The expression -(-3) should be simplified using the rule that a negative times a negative gives a positive. We classify numbers as even if they are divisible by 2 and odd if they are not divisible by 2. Exactly one number has different parity from the others. Concept / Approach: The first step is to simplify -(-3). Using basic rules of signs, a negative of a negative number is positive, so -(-3) becomes +3. Once all numbers are in simple form, the idea is to check whether each is even or odd. Odd one out questions involving integers often use parity as the distinguishing property. If three numbers are odd and one is even, or vice versa, the number with different parity is the odd one out. Step-by-Step Solution: Step 1: Simplify -(-3). A negative of a negative gives a positive, so -(-3) = 3. Step 2: List the simplified numbers: 1, -2, 3, and 5. Step 3: Check the parity of 1. Since 1 is not divisible by 2, it is an odd number. Step 4: Check the parity of -2. Because -2 is divisible by 2 (that is, -2 / 2 = -1), it is an even number. Step 5: Check the parity of 3. Since 3 is not divisible by 2, it is odd. Step 6: Check the parity of 5. Since 5 is not divisible by 2, it is odd. Step 7: Group the odd numbers: 1, 3, and 5 are all odd integers. Step 8: Observe that -2 is the only even integer among the four. Step 9: Conclude that -2 is the odd number out based on parity. Verification / Alternative check: You can verify by thinking in terms of multiples of 2. Any integer that can be written as 2 * k for some integer k is even. -2 fits this definition because -2 = 2 * (-1). The numbers 1, 3, and 5 cannot be expressed as 2 times an integer without involving fractions, so they are odd. Also, ignoring the sign and checking absolute values, 1, 3, and 5 are odd absolute values while 2 is even. The sign does not affect evenness or oddness, so this reinforces the conclusion that -2 is the unique even number and hence the odd one out. Why Other Options Are Wrong: 1 is an odd integer and shares this property with 3 and 5, so it is not the odd one out. -(-3) simplifies to 3, which is an odd number and belongs with 1 and 5. 5 is also an odd number and matches the parity of 1 and 3, so it cannot be considered the odd one out. Common Pitfalls: One common pitfall is to be confused by the expression -(-3) and treat it as some kind of special or different number. Another mistake is to focus on the sign rather than on evenness and oddness, thinking that the only negative number must be the odd one out without checking parity. However, even negative numbers are still considered even. To avoid such errors, always simplify expressions first and then apply clear definitions of even and odd numbers. Remember that parity is based only on divisibility by 2 and not on whether the number is positive or negative. Final Answer: The odd number is -2.

Odd Man Out and Series Questions