Question 1

Find the odd 4-letter block (edge-pair pattern): Identify the item that breaks the “+1, then a big forward jump, then +1” symmetric-edge pattern.

Accepted Answer

Introduction / Context: Four-letter blocks can encode balanced edge behavior: the first pair increments by +1, then a larger forward jump brings the sequence near the end of the alphabet, followed by another +1. This yields a “+1, big jump, +1” edge pattern in many reasoning sets. Given Data / Assumptions: ABYZ: A→B (+1), B→Y (large jump), Y→Z (+1) → fits. CDWX: C→D (+1), D→W (large jump), W→X (+1) → fits. EFUV: E→F (+1), F→U (large jump), U→V (+1) → fits. GHTV: G→H (+1), H→T (large jump), T→V (+2) → breaks the final +1 edge. Concept / Approach: Focus on the edge increments (1st→2nd and 3rd→4th letters). The outlier alters the final edge from +1 to +2. Step-by-Step Solution: 1) Compute successive differences.2) Confirm the last step is +1 for conforming items.3) GHTV ends with +2, so it is the odd item. Verification / Alternative check: Visualize on the alphabet line: three land on adjacent letters at both ends; GHTV skips one at the tail. Why Other Options Are Wrong: They preserve the symmetric small-step edges around a central large jump. Common Pitfalls: Do not try to equalize the middle “big jump”; its size varies but the edge +1 pattern is the intended key. Final Answer: GHTV

Question 2

Find the odd letter triple (constant step -3): Pick the option that does not decrease by 3 and then by 3 again.

Accepted Answer

Introduction / Context: Another standard pattern uses a constant negative step between letters. When each successive letter is exactly three positions earlier in the alphabet, the triple follows a “-3, -3” rule. Any item that breaks this is the odd one out. Given Data / Assumptions: G → D (−3), D → A (−3) → GDA fits. O → L (−3), L → I (−3) → OLI fits. V → S (−3), S → P (−3) → VSP fits. W → Y (+2), Y → Z (+1) → WYZ breaks the rule. Concept / Approach: Translate letters to indices and check successive differences. The outlier is the only one that does not maintain the constant −3 step twice. Step-by-Step Solution: 1) Compute two differences for each triple.2) Identify those equal to −3 and −3.3) “WYZ” yields +2 and +1, so it is the outlier. Verification / Alternative check: Reverse-reading (right-to-left) should give +3, +3 for conforming items; WYZ still fails. Why Other Options Are Wrong: They follow the constant-step rule precisely. Common Pitfalls: Ignore visual proximity; always compute numeric differences to avoid mistakes. Final Answer: WYZ

Question 3

Find the odd letter triple (forward-then-back pattern): Select the item that does not follow “forward step, then backward step” behavior.

Accepted Answer

Introduction / Context: Some triples are constructed with a forward move from the 1st to 2nd letter and a backward move from the 2nd to 3rd. Items that use two backward moves (or two forward moves) deviate from this template. Given Data / Assumptions: P→Q (+1), Q→O (−2) → forward then back. T→W (+3), W→S (−4) → forward then back. V→B (wrap large negative), B→U (+) → still exhibits a forward/back alternation in net behavior. A→Z (−1), Z→Y (−1) → both backward; “AZY” breaks the alternation. Concept / Approach: We are not enforcing step sizes, only the direction change (+ then −). The item that lacks this directional alternation is the outlier. Step-by-Step Solution: 1) Note sign of each step (+ or −).2) Identify triples with a change of direction from step 1 to step 2.3) “AZY” has (−, −), hence is the odd one out. Verification / Alternative check: Even allowing wrap-around arithmetic, “AZY” does not include a forward step. Why Other Options Are Wrong: They include a forward/back (or back/forward) alternation. Common Pitfalls: Do not fixate on the magnitude; only the direction change matters for this classification. Final Answer: AZY

Question 4

Find the odd 4-letter block (−3, −1, +3 signature): Pick the option that does not follow the pattern “−3, −1, +3”.

Accepted Answer

Introduction / Context: Four-letter sequences can encode a three-step signature in terms of alphabet index differences. When most items share a fixed signature, the single deviation is the odd one out. Given Data / Assumptions: GDCF: G→D (−3), D→C (−1), C→F (+3) → fits. LIHK: L→I (−3), I→H (−1), H→K (+3) → fits. TQPS: T→Q (−3), Q→P (−1), P→S (+3) → fits. RNMQ: R→N (−4), N→M (−1), M→Q (+4) → does not fit (−4, −1, +4). Concept / Approach: Convert letters to indices and compute successive differences. The outlier will violate the consistent “−3, −1, +3” pattern used by the others. Step-by-Step Solution: 1) Compute the three differences for each option.2) Compare with the template (−3, −1, +3).3) Only RNMQ yields (−4, −1, +4), so it is odd. Verification / Alternative check: Reverse-direction checks preserve the mismatch, confirming RNMQ as the deviation. Why Other Options Are Wrong: They conform exactly to the intended signature. Common Pitfalls: Do not mix up sign and magnitude; both must match the signature. Final Answer: RNMQ

Question 5

Find the odd 4-letter block (consistent +2 steps, then large negative): Select the item that does not share the “+2, +2, then big negative jump” structure.

Accepted Answer

Introduction / Context: Many quartet patterns build momentum with two equal forward steps and then reset with a larger backward jump. Items that introduce wraparound irregularities break the shared rhythm and become the outlier. Given Data / Assumptions: DFHB: D→F (+2), F→H (+2), H→B (large −6) → fits. KMOJ: K→M (+2), M→O (+2), O→J (−5) → broadly fits the “two +2 then back” structure. PRTN: P→R (+2), R→T (+2), T→N (−6) → fits. XZBV: X→Z (+2), Z→B (wrap irregular), B→V (+20) → breaks the clean “two +2 then back” cadence. Concept / Approach: We are judging structural similarity: two modest forward moves followed by a backward correction. The option that requires a wraparound forward leap at the end does not match. Step-by-Step Solution: 1) Check first two differences are +2 and +2.2) Confirm the last difference is a backward move (negative).3) XZBV ends with a large forward leap, so it is odd. Verification / Alternative check: Visualizing positions on the alphabet line highlights XZBV’s end leap versus the others’ backward correction. Why Other Options Are Wrong: They share the structural rhythm (two +2 forward steps, then a retreat). Common Pitfalls: Do not focus on the exact magnitude of the backward step; the direction and structure are the key. Final Answer: XZBV

Question 6

Find the odd 4-letter block (−2, −2, +6 signature): Choose the option that does not follow the “−2, −2, +6” pattern.

Accepted Answer

Introduction / Context: When several items share the same three-step signature, the outlier is the one whose differences do not match the template. Here the template is two equal backward steps followed by a forward jump restoring balance. Given Data / Assumptions: LJHN: L→J (−2), J→H (−2), H→N (+6) → fits. FDBH: F→D (−2), D→B (−2), B→H (+6) → fits. SQOU: S→Q (−2), Q→O (−2), O→U (+6) → fits. PNKR: P→N (−2), N→K (−3), K→R (+7) → breaks the pattern. Concept / Approach: Compute successive differences and compare against the “−2, −2, +6” rule. The item that deviates in magnitude is the odd one out. Step-by-Step Solution: 1) Calculate three differences for each option.2) Match them to (−2, −2, +6).3) PNKR yields (−2, −3, +7), hence is the outlier. Verification / Alternative check: Reverse the sequence to check for symmetry; PNKR still fails to align. Why Other Options Are Wrong: They conform exactly to the intended signature. Common Pitfalls: Ensure sign and magnitude are both verified; small slips easily invert conclusions. Final Answer: PNKR

Question 7

Find the odd mixed-case triple (constant +5, +5 steps): Pick the item that breaks the equal forward steps between letters.

Accepted Answer

Introduction / Context: Case (upper/lower) can distract from the underlying arithmetic. By mapping letters to indices regardless of case, we can test whether a constant forward step (e.g., +5) is applied twice in succession. Given Data / Assumptions: MrW: M→r (13→18, +5), r→W (18→23, +5) → fits. KpU: K→p (11→16, +5), p→U (16→21, +5) → fits. BgL: B→g (2→7, +5), g→L (7→12, +5) → fits. ChN: C→h (3→8, +5), h→N (8→14, +6) → breaks (second step +6). Concept / Approach: Ignore case; compute numerical differences only. The outlier is the only triple whose second step is not +5. Step-by-Step Solution: 1) Convert each letter to its A=1…Z=26 index.2) Compute both steps.3) Flag the item with a non-+5 second step: “ChN”. Verification / Alternative check: Visual alignment on an alphabet ruler shows equal spacing for three items and a wider final gap for the outlier. Why Other Options Are Wrong: They maintain +5 spacing consistently. Common Pitfalls: Do not treat case changes as separate alphabets; the index positions are identical. Final Answer: ChN

Question 8

Find the odd 4-letter mixed-case block (+1, −3, +1 signature): Choose the option that does not follow “+1, −3, +1”.

Accepted Answer

Introduction / Context: Adding case variety can disguise a simple numeric signature. Treat upper and lower case as the same positions and check a three-step pattern such as “+1, −3, +1”. Given Data / Assumptions: CdaB: C→d (+1), d→a (−3), a→B (+1) → fits. VwtU: V→w (+1), w→t (−3), t→U (+1) → fits. LmjK: L→m (+1), m→j (−3), j→K (+1) → fits. RsqP: R→s (+1), s→q (−2), q→P (−1) → breaks. Concept / Approach: Compute successive differences ignoring case. The outlier fails either the sign sequence or the magnitudes. Step-by-Step Solution: 1) Translate to indices.2) Check for +1, then −3, then +1.3) “RsqP” yields (+1, −2, −1), so it is odd. Verification / Alternative check: The first three share both the sign pattern and magnitudes; only the fourth diverges twice. Why Other Options Are Wrong: They conform to the full signature, not just parts of it. Common Pitfalls: Ensure you keep the order and signs; mixing them reverses the logic. Final Answer: RsqP

Question 9

Find the odd 4-character pattern (+2, +1, +2 across cases): Pick the item that does not follow “+2, +1, +2”.

Accepted Answer

Introduction / Context: Alternating-case sequences still map to the same alphabetical index. Here, most items step +2, then +1, then +2. The outlier changes the first step magnitude, which exposes it immediately when the arithmetic is checked. Given Data / Assumptions: BdEg: B→d (+2), d→E (+1), E→g (+2) → fits. PrSu: P→r (+2), r→S (+1), S→u (+2) → fits. KmNp: K→m (+2), m→N (+1), N→p (+2) → fits. TwXz: T→w (+3), w→X (+1), X→z (+2) → first step +3, so breaks the rule. Concept / Approach: Ignore case, compute three successive differences, and match against the template (+2, +1, +2). The one with a different first step is odd. Step-by-Step Solution: 1) Translate letters to indices (A=1…Z=26).2) Compute differences for each hop.3) “TwXz” starts with +3 instead of +2 → outlier. Verification / Alternative check: Visual spacing on an alphabet line shows a wider first gap only for the outlier. Why Other Options Are Wrong: They maintain the same +2, +1, +2 cadence. Common Pitfalls: Do not be distracted by wrap-around concerns; none of the conforming items require wrapping. Final Answer: TwXz

Question 10

Find the odd letter triple (shared +3 then −2 signature): Select the option that does not match the “+3, −2” two-step pattern.

Accepted Answer

Introduction / Context: Two-step signatures are common in short triples. If most items jump forward by 3 and then back by 2, the remaining item will be the one with different magnitudes. Given Data / Assumptions: HKI: H→K (+3), K→I (−2) → fits. UXV: U→X (+3), X→V (−2) → fits. CFD: C→F (+3), F→D (−2) → fits. MQN: M→Q (+4), Q→N (−3) → does not fit. Concept / Approach: Compute differences and compare to the template (+3, −2). The sole deviation flags the odd item. Step-by-Step Solution: 1) Convert letters to indices.2) Check for +3 then −2.3) MQN yields +4 then −3 → outlier. Verification / Alternative check: Reversing the direction keeps MQN misaligned, confirming it as the odd one. Why Other Options Are Wrong: They satisfy the exact two-step signature. Common Pitfalls: Do not overlook sign; both magnitude and sign matter. Final Answer: MQN

Question 11

Classification – Odd one out (plant part eaten): Select the item that does not match the others based on which part of the plant is commonly eaten: Radish, Carrot, Garlic, Gourd.

Accepted Answer

Introduction / Context: Odd-one-out questions often rely on a single clear attribute. Here, the four food items can be grouped by the botanical part we commonly eat. Three are underground storage organs (roots/bulb), while one is an above-ground fruit. Given Data / Assumptions: Radish: edible taproot. Carrot: edible taproot. Garlic: edible bulb (modified underground stem with cloves). Gourd: edible fruit of various cucurbit plants (above ground). Concept / Approach: Classify by plant part: root, bulb, stem, leaf, flower, or fruit. A single member that is not an underground organ becomes the outlier. Step-by-Step Solution: Radish → root (underground).Carrot → root (underground).Garlic → bulb (underground).Gourd → fruit (above-ground vine produce). Verification / Alternative check: Even across cuisines, radish and carrot are roots, garlic is a bulb; gourd families (bottle, bitter, ridge, etc.) are fruits borne on vines. Thus gourd uniquely differs by plant part and growth location. Why Other Options Are Wrong: Radish, Carrot, and Garlic all come from underground organs used for storage by the plant. Common Pitfalls: Confusing culinary usage with botany; “vegetable” is culinary, but plant part (root/bulb/fruit) is botanical and provides the precise distinction needed. Final Answer: Gourd

Question 12

Classification – Odd one out (vitamin-deficiency diseases vs infectious disease): Identify the outlier: Scurvy, Rickets, Night-blindness, Influenza.

Accepted Answer

Introduction / Context: This item tests medical classification. Three options are classic vitamin-deficiency disorders; one is an infectious viral illness. Distinguishing etiology (cause) cleanly separates the outlier. Given Data / Assumptions: Scurvy → deficiency of vitamin C. Rickets → deficiency of vitamin D (often with calcium/phosphate imbalance) in children. Night-blindness → commonly due to vitamin A deficiency. Influenza → acute respiratory infection caused by influenza viruses. Concept / Approach: Group by cause: nutritional deficiency vs infection. The single infectious condition is the odd one out. Step-by-Step Solution: Tag scurvy, rickets, night-blindness as deficiency diseases.Tag influenza as infectious, not deficiency-based.Select influenza as the unique member by etiology. Verification / Alternative check: Symptoms vary across these conditions, but etiology remains the decisive discriminator: only influenza is communicable and caused by a pathogen. Why Other Options Are Wrong: Scurvy, Rickets, Night-blindness are nutrient-deficiency conditions rather than infections. Common Pitfalls: Confusing effects of deficiency (e.g., bone deformities in rickets) with infectious symptoms; focus on the underlying cause. Final Answer: Influenza

Question 13

Classification – Odd one out (mythical vs real animals): Choose the one that does not belong: Unicorn, Rhino, Fox, Antelope.

Accepted Answer

Introduction / Context: Taxonomic or reality-status classification is common in verbal reasoning. Three options are extant, real animals; one is a legendary creature found in myth and heraldry. Given Data / Assumptions: Unicorn: mythical, horse-like creature with a single horn. Rhino: real, large herbivore with one or two horns. Fox: real, small-to-medium omnivorous mammal. Antelope: real, herbivorous ungulate group. Concept / Approach: Dichotomize into real vs mythical. The unique mythical entity is the outlier. Step-by-Step Solution: Rhino, Fox, Antelope → real animals.Unicorn → legendary, not scientifically recognized. Verification / Alternative check: Even considering one-horned rhinos, unicorns remain mythical; there is no natural species corresponding to the unicorn of lore. Why Other Options Are Wrong: Rhino, Fox, Antelope are real taxa; they form the majority class. Common Pitfalls: Associating “one horn” with unicorn and rhino; reality status is the intended discriminator here. Final Answer: Unicorn

Question 14

Classification – Odd one out (water-based activities vs unrelated): Identify the item unlike the others: Swimming, Sailling, Diving, Driving.

Accepted Answer

Introduction / Context: Activity classification can focus on environment or medium. Three activities are water-based; one is a land-based vehicular skill. Given Data / Assumptions: Swimming: human propulsion in water. Sailling (sailing): navigating a boat using wind on water. Diving: entering/descending into water. Driving: operating a vehicle (typically on land roads). Concept / Approach: Group by medium: water vs land. The non-water activity is the outlier. Step-by-Step Solution: Swimming → water.Sailing → water.Diving → water.Driving → land vehicle operation. Verification / Alternative check: Even though some driving can occur on boats (pilotage), conventional “driving” refers to cars/trucks on roads; “sailing” already covers watercraft operation. Why Other Options Are Wrong: Swimming, Sailing, and Diving share a water medium. Common Pitfalls: Overinterpreting the misspelling “Sailling”; intent clearly indicates “sailing.” Final Answer: Driving

Question 15

Classification – Odd one out (crimes vs social attitude): Pick the item that does not belong with the rest: Blackmail, Smuggling, Snobbery, Forgery.

Accepted Answer

Introduction / Context: This question separates legal/penal categories from character traits. Three entries are recognized crimes; one is a personal attitude or behavior that is socially disliked but not a criminal offense in itself. Given Data / Assumptions: Blackmail → coercion using threats to reveal information for gain (crime). Smuggling → illegal movement of goods across borders (crime). Forgery → falsification of documents/items for deception (crime). Snobbery → attitude of social superiority or disdain (not a crime). Concept / Approach: Classify by legal status: codified offense vs mere social attitude. The non-criminal item is the outlier. Step-by-Step Solution: Blackmail, Smuggling, Forgery → crimes.Snobbery → attitude, not a codified offense. Verification / Alternative check: Even if snobbery leads to discriminatory acts, the term itself denotes an attitude, not a specific illegal act. Why Other Options Are Wrong: Blackmail, Smuggling, and Forgery share legal prosecution frameworks; snobbery does not. Common Pitfalls: Confusing moral judgment with legality; focus on whether the term denotes a statutory offense. Final Answer: Snobbery

Question 16

Classification – Odd one out (measurement units: mass vs volume): Choose the unit that is not a unit of mass: Gallon, Ton, Quintal, Kilogram.

Accepted Answer

Introduction / Context: Reasoning items about units require identifying the physical quantity measured. Three options are units of mass; one measures volume, making it the unique outlier. Given Data / Assumptions: Ton → mass (1000 kg in metric ton). Quintal → mass (100 kg). Kilogram → SI base unit of mass. Gallon → volume (U.S./Imperial liquid measure). Concept / Approach: Tag each unit by physical dimension: mass vs volume. Select the unit that does not measure mass. Step-by-Step Solution: Ton, Quintal, Kilogram → mass.Gallon → volume. Verification / Alternative check: Even when converting between mass and volume using density, the unit’s inherent dimension remains distinct. Gallon stays a unit of volume. Why Other Options Are Wrong: Ton, Quintal, and Kilogram measure mass and thus belong to the same category. Common Pitfalls: Mistaking “quintal/ton” for volume due to bulk trading contexts; they are still mass units. Final Answer: Gallon

Question 17

Classification – Odd one out (alloy vs pure element): Identify the outlier: Zinc, Bronze, Silver, Platinum.

Accepted Answer

Introduction / Context: Materials classification can separate pure chemical elements from alloys. Three items are chemical elements, while one is a mixture (alloy), making it the odd one out. Given Data / Assumptions: Zinc → element (Zn). Silver → element (Ag). Platinum → element (Pt). Bronze → alloy, typically copper + tin (may include other elements). Concept / Approach: Check if the item is on the periodic table (element) or a composition of elements (alloy). The single alloy is the outlier. Step-by-Step Solution: Zinc, Silver, Platinum → elements.Bronze → alloy, not a pure element. Verification / Alternative check: Other classic alloys (brass, steel) confirm the pattern; “bronze” is not a chemical symbol and its composition varies by formulation. Why Other Options Are Wrong: Zinc, Silver, Platinum are single elements; they belong together. Common Pitfalls: Confusing “metal” with “element.” Alloys are metallic but not elemental. Final Answer: Bronze

Question 18

Classification – Odd one out (collective nouns vs animal name): Which item does not fit: Herd, Flight, Hound, Swarm?

Accepted Answer

Introduction / Context: English vocabulary includes collective nouns for groups of animals. Three choices are collective nouns; one is a singular animal species/type, not a collective term. Given Data / Assumptions: Herd → group of cattle/ungulates. Flight → group of birds in flight. Swarm → group of insects (e.g., bees). Hound → a dog (type/breed), not a collective noun. Concept / Approach: Categorize as “collective term” vs “animal name.” The non-collective is the outlier. Step-by-Step Solution: Herd, Flight, Swarm → collective nouns.Hound → animal name, singular class. Verification / Alternative check: While “pack” is the collective for hounds, “hound” itself is not collective, confirming uniqueness. Why Other Options Are Wrong: Herd, Flight, Swarm all denote groupings. Common Pitfalls: Assuming any animal word can serve collectively; English uses specific collective nouns. Final Answer: Hound

Question 19

Classification – Odd one out (annular/circular objects vs flatware): Select the outlier: Ring, Tyre, Plate, Bangle.

Accepted Answer

Introduction / Context: Shape-based classification isolates annular (doughnut-like) objects. Three items are typically circular with a central hole; one is generally a solid, flat dish without a through-hole. Given Data / Assumptions: Ring → circular band with a hole. Tyre → circular torus-like form with central hub hole. Bangle → circular band worn on wrist with an inner opening. Plate → flat dish; typically no central hole. Concept / Approach: Group by annular geometry. The non-annular item is the outlier. Step-by-Step Solution: Ring, Tyre, Bangle → annular objects.Plate → flat, non-annular object. Verification / Alternative check: Specialty plates (e.g., donut plates) are exceptions; the default household plate lacks a hole, preserving the classification. Why Other Options Are Wrong: Ring, Tyre, Bangle share annular shape and wear/functional similarities. Common Pitfalls: Equating “circular” with “annular.” An annulus specifically has a central hole. Final Answer: Plate

Question 20

Classification – Odd one out (size vs weight attribute): Which term does not match the others: Huge, Tiny, Heavy, small.

Accepted Answer

Introduction / Context: Adjectives can be grouped by the physical property they describe. Three words indicate size (magnitude of dimensions); one indicates weight/mass, not size per se. Given Data / Assumptions: Huge → large size. Tiny → very small size. small → small size. Heavy → large weight/mass (may correlate with size but is distinct). Concept / Approach: Separate “size adjectives” from “weight adjectives.” The weight adjective is the outlier. Step-by-Step Solution: Huge, Tiny, small → size.Heavy → weight. Verification / Alternative check: Some small objects are heavy (e.g., lead ball), confirming that weight is independent of size; hence “heavy” stands apart. Why Other Options Are Wrong: Huge, Tiny, small all directly quantify spatial magnitude. Common Pitfalls: Assuming everyday correlation equals identity; the properties are different dimensions. Final Answer: Heavy

Classification Questions