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- Question
Lami's theorem is applicable only for
Options- A. Non-Concurrent forces
- B. Coplanar forces
- C. Coplanar and concurrent forces
- D. Any type of forces
- Correct Answer
- Coplanar and concurrent forces
ExplanationThe Lami's theorem states that " If three forces coplanar and concurrent forces acting on a particle keep it in equilibrium, then each force is proportional to the sine of the angle between the other two and the constant of proportionality is the same." This theorem is derived from the Sine rule of triangles.
- 1. 18 tens 20 ones =
Options- A. 1820
- B. 180
- C. 200
- D. 160 Discuss
- 2. Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is ?
Options- A. 5
- B. 4
- C. 7
- D. 6 Discuss
- 3. The sum of the interior angles of a polygon is twice the sum of its exterior angles. How many sides does the polygon have ?
Options- A. 6
- B. 4
- C. 5
- D. 7 Discuss
- 4. In a class of students, if 1 is absent rest of people can be divided into 6 equal parts and if 2 are absent rest of them are divided into 7 equal parts, how many students are present in the class ?
Options- A. 28
- B. 19
- C. 57
- D. 37 Discuss
- 5. How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ?
Options- A. 3
- B. 5
- C. 7
- D. 9 Discuss
- 6. 7/9 of the people present in a hall are sitting in 9/13 of the chairs available and the rest are standing. If there are 28 empty 9 sitting chairs, how many chairs would have been still empty if everyone in the hall was sitting?
Options- A. 15
- B. 12
- C. 18
- D. 10 Discuss
- 7. In the given numbers, if in each number first digit is replaced by the third digit, second digit is replaced by the first digit and third digit is replaced by the second digit then which number will be the biggest ? 653 749 872 933 541
Options- A. 933
- B. 872
- C. 749
- D. 653 Discuss
- 8. 0 divided by 0
Options- A. 0
- B. 1
- C. Undefined
- D. Indeterminate Discuss
- Let us think by this analogy that,
- Again, another analogy,(from limiting concept of 1/0 = infinity)
- Again, another analogy,
- 9. Rajitha has a calculator, which has 10 digits. She want to clean the calculator by removing all the keys and while reassembling it, she interchanged the locations of 3 pairs of keys. For example, if she placed the key ?3? in the place of the key ?7?, she placed the key ?7? only in the place of the key ?3? and not any other key. All keys that were interchanged corresponded only to numbers. Later, she input some calculations and obtained outputs as provided in the table below. The input is shown in terms of the keys that Kavitapressed, while the output is the output displayed by the calculator. Output: 1. 95 + 84=128 2. 128 + 64=195 3. 912 + 43=942 4. 178 + 19=192 Question : Which of the following pair of digits is unchanged ?
Options- A. 9, 0, 3
- B. 1, 3, 8
- C. 7, 0, 1
- D. 2, 4, 1 Discuss
- 10. Negative divided by Negative
Options- A. -ve
- B. +ve
- C. 0
- D. Can't be determined Discuss
Arithmetic Reasoning problems
Search Results
Correct Answer: 200
Explanation:
18 tens 20 ones, the given stateent can be split into
18 tens = 18 x 10 = 180
20 ones = 20 x 1 = 20
Then add both => 180 + 20 = 200
Hence, 18 tens 20 ones = 200.
Correct Answer: 5
Explanation:
Let the number be x. Then,
- 4x = x + 50
- 5x - 50 = 0
(3x + 10)(x - 5) = 0
x = 5
Correct Answer: 6
Explanation:
We know that
Sum of Interior angles of Polygon = 180(n-2)
Sum of Exterior angles of Polygon = 360
so 180(n-2)=2x360
Therefore, by solving we get n=6 sides.
Correct Answer: 37
Explanation:
Let the number of students in the class be 'x'.
Given if 1 is absent rest of people can be divided into 6 equal parts i.e (x-1)/6.........(1)
And given if 2 are absent rest of people can be divided into 7 equal parts i.e (x-2)/7.....(2)
From (1)&(2), we get
x-1/6 = ((x-2)/7) + 1
=> x = 37.
Correct Answer: 5
Explanation:
There are total 5 ways.
we have only one kg of weight so,
2kg = 1kg + 1kg
4kg = 1 + 2 + 1
8kg = 1 + 2 + 4 + 1
16kg = 1 + 2 + 4 + 8 + 1
31kg = 1 + 2 + 4 + 8 + 16
So 5 weights are needed.
Correct Answer: 10
Correct Answer: 749
Correct Answer: Indeterminate
Explanation:
Indeterminate are those,which mathematics can?t determine.
Because we don?t actually know which one is the exact answer for this due to having lots of results for this.
Explanation::
0 / 1 = 0
0 / 2 = 0
????
???..
we can say 0 / n = 0 from this we can write, 0/0 = 0
1 / 0 = +? or -?
2 /0 = +? or -?
???
.??.
we can say 0 / 0 = ?
1 / 1 = 1
2/2 = 1
.??..
???..
we can say, 0/0 = 1
Now, you see it?s confusing. Every analog is mathematically correct then which one is the right answer for 0/0. Therefore Mathematics can?t determine this fact.
So, 0/0 is indeterminate.
Correct Answer: 7, 0, 1
Explanation:
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 0 | 1 | 4 | 8 | 2 | 6 | 5 | 7 | 3 | 9 |
Here pairs interchanged are
2, 4
3, 8
5, 6
Unchanged are 0, 1, 7, 9
Correct Answer: +ve
Explanation:
We know the Mathematical rules that
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