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Q:

Maneela, Raghu and Aravind have some jems with each of them. Five times the number of jems with Raghu equals seven times the number of jems with Maneela while five times the number of jems with Maneela equals seven times the number of jems with Aravind. What is the minimum number of jems that can be there with all three of them put together ?

A) 108	B) 107
C) 109	D) 110

Answer & Explanation Answer: C) 109

Explanation:

From given data,

R : M = 5 : 7

M : A = 5 : 7

R : M : A = 25 : 35 : 49

25 + 35 + 49 = 109

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Filed Under: Ratios and Proportions
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Q:

If two is subtracted from each odd digit and three is added to each even digit in the number 94257636, how many digits will appear twice in the new number thus formed ?

A) 0	B) 1
C) 2	D) 3

Answer & Explanation Answer: D) 3

Explanation:

EXP.

Here 5, 7 & 9 are repeating after modulation.

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Filed Under: Arithmetical Reasoning
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Q:

What should come in place of question mark (?) in the following number series?

132 156 ? 210 240 272

A) 196	B) 182
C) 199	D) 204

Answer & Explanation Answer: B) 182

Explanation:

The given series follows a logic that

11 x 12, 12 x 13, 13 x 14, 14 x 15, 15 x 16,...

So the missing number is 13 x 14 = 182

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Filed Under: Number Series
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Q:

If the average height of boys in a hall is 180 cm and that of girls is 150 cm. If the average height of the gathering is 165 cm, then find the number of girls present in the hall if the number of boys present in the hall are 78 ?

A) 56	B) 64
C) 87	D) 78

Answer & Explanation Answer: D) 78

Explanation:

Using Trial and error method,

we get the number of girls in the hall = 78

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Filed Under: Average
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Q:

60 percent of 2/7 of three-fourth of a number is 2664. What is the number ?

A) 20720	B) 21352
C) 25421	D) 24150

Answer & Explanation Answer: A) 20720

Explanation:

Let N be the required number.

=> $\frac{60}{100} x \frac{2}{7} x \frac{3}{4} x N = 2664$

=> N = 2664x2x7x5/9

=> N = 20720.

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Filed Under: Percentage
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Q:

DI.

What is the difference between the number of uneducated females in city P and that of uneducated males in city S ?

A) 9 lakhs	B) 6 lakhs
C) 3 lakhs	D) 2 lakhs

Answer & Explanation Answer: A) 9 lakhs

Explanation:

Educated females in city P = 25 lakhs

Uneducated females in city P = 30 - 25 = 5 lakhs

Educated males city S = 21 lakhs

Educated males in city S = 35 - 21= 14 lakhs

Required difference = 14 - 5 = 9 lakhs

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Filed Under: Table Charts
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Q:

In the following number series only one number is wrong. Find out the wrong number ?

6, 15, 35, 63, 143, 221, 323

A) 143	B) 63
C) 323	D) 35

Answer & Explanation Answer: B) 63

Explanation:

Here the series follows the pattern that, product of succesive prime numbers i.e,

2 × 3 = 6

3 × 5 = 15

5 × 7 = 35

7 × 11 = 77

11 × 13 = 143

13 × 17 = 221

17 × 19 = 323

So here in place of 77 the number 63 is written.

So the wrong number is 63.

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Filed Under: Odd Man Out
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Q:

Find the Missing Numbers in the given Number Puzzle ?

A) 169 & 81	B) 67 & 121
C) 64 & 115	D) 70 & 110

Answer & Explanation Answer: A) 169 & 81

Explanation:

Observe that in each column, square of sum of digits in the first row = Respective second row elements.

In the same way, square of sum of digits in the second row = Respective third row elements.

=> ${(6 + 4)}^{2} = 10^{2} = 100$

=> ${(4 + 9)}^{2} = 13^{2} = 169$

=> ${(8 + 1)}^{2} = 9^{2} = 81$ .

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Filed Under: Number Puzzles
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