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Q:

Number of basic SI unit is

A) 4	B) 7
C) 6	D) 5

Answer & Explanation Answer: B) 7

Explanation:

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Filed Under: Physics

Q:

Which is the third number to the left of the number which is exactly in the middle of the following sequence of numbers?

1 2 3 4 5 6 7 8 9 2 4 6 8 9 7 5 3 1 9 8 7 6 5 4 3 2 1

A) 3	B) 5
C) 4	D) 7

Answer & Explanation Answer: C) 4

Explanation:

There are 27 numbers in the given sequence

So, middle number = 14th number = 9

Clearly, the third number to the left of this 9 is 4

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Filed Under: Number, Ranking and Time Sequence Test

Q:

Choose the number pair/group which is different from others?

A) 7: 22	B) 12 : 37
C) 8 : 33	D) 15 : 46

Answer & Explanation Answer: C) 8 : 33

Explanation:

In all other pairs, 2nd number = (1st number × 3) + 1.

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Filed Under: Classification

Q:

Choose the number which is different from others in the group?

A) 64	B) 162
C) 27	D) 144

Answer & Explanation Answer: D) 144

Explanation:

Each of the numbers except 144, is a perfect cube.

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Filed Under: Classification

Q:

Choose the number which is different from others in the group?

A) 380	B) 120
C) 290	D) 168

Answer & Explanation Answer: A) 380

Explanation:

Each of the numbers except 380, is either one less or one more than the square of a certain number

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Filed Under: Classification

Q:

Choose the number which is different from others in the group?

A) 183	B) 137
C) 121	D) 231

Answer & Explanation Answer: C) 121

Explanation:

121 is the only perfect square number in the group.

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Filed Under: Classification

Q:

Pencils, Pens and Exercise books in a shop are in the ratio of 10: 2 : 3. If there are 120 pencils, the number of exercise books in the shop is:

A) 26	B) 36
C) 46	D) 56

Answer & Explanation Answer: B) 36

Explanation:

Let Pencils = 10x, Pens = 2x & Exercise books = 3x. Now, 10x = 120 hence x = 12.
Number of exercise books = 3x = 36.

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Filed Under: Ratios and Proportions

Q:

The sum of three numbers is 98. If the ratio of the first to second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is:

A) 10	B) 20
C) 30	D) 40

Answer & Explanation Answer: C) 30

Explanation:

Let the three parts be A, B, C. Then,

A : B = 2 : 3 and B : C = 5 : 8 = $(5 * \frac{3}{5}) : (8 * \frac{3}{5})$ = $3 : \frac{24}{5}$

$\Rightarrow$ A : B : C = 2 : 3 : => = 10 : 15 : 24

$\Rightarrow$ B = $\frac{24}{5}$ = 30

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Filed Under: Ratios and Proportions

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