6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If ${(x + y)}^{2} - xy = 0$ , then find the value of $\frac{x^{3} - y^{3}}{x - y}$ .

A) 2	B) 3
C) 0	D) 5

Answer & Explanation Answer: C) 0

Explanation:

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0 43220

Q:

Find the range of the data 9, 5, 9, 3, 4, 7, 8, 4, 8, 9, 5, 9.

A) 3	B) 5
C) 6	D) 4

Answer & Explanation Answer: C) 6

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5 43216

Q:

Find the odd man out of the following number series?

22, 26, 42, 78, 142, 244

A) 244	B) 142
C) 78	D) 42

Answer & Explanation Answer: A) 244

Explanation:

The given number series 22, 26, 42, 78, 142, 244 follows a pattern that,

$22 22 + 2^{2} = 22 + 4 = 26 26 + 4^{2} = 26 + 16 = 42 42 + 6^{2} = 42 + 36 = 78 78 + 8^{2} = 78 + 64 = 142 142 + 10^{2} = 142 + 100 = 242$

Hence, the odd one in the given number series is 244.

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3 43177

Q:

If $s + \frac{1}{s} = 4$ , then the value of $s^{2} + \frac{1}{s^{2}}$

A) 14	B) 16
C) 20	D) 24

Answer & Explanation Answer: A) 14

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0 43115

Q:

If $x^{2} = 25^{2} - 15^{2},$ then find the value of x?

A) 40	B) 50
C) 20	D) 25

Answer & Explanation Answer: C) 20

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0 43107

Q:

Find the missing number in the given number series?

5 11 21 44 ? 175

A) 86	B) 78
C) 94	D) 102

Answer & Explanation Answer: A) 86

Explanation:

Here the given number series is 5 11 21 44 ? 175

Now the given series follows a pattern, that

x2 + 1, x2 - 1, x2 + 2, x2 - 2, x2 + 3, x2 - 3,...

Then the missing number is x2 - 2

= 44 x 2 - 2 = 88 - 2 = 86

Hence, the missing number in the number series is 86.

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2 43097

Q:

Solve the following

$78 \div [- 4 + (- 3) of \{27 \div (- 18 \div - 2)\}]$

A) -6	B) 13
C) 6	D) 15.6

Answer & Explanation Answer: A) -6

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0 43039

Q:

Calculate the value of x if $\sqrt{1 - (\frac{x}{289})} = \frac{15}{17}$

A) 64	B) 44
C) 36	D) 54

Quantitative Aptitude - Arithmetic Ability Questions

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