6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

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

12, 24, 26.5, 79.5, ?, 330

A) 211	B) 101.5
C) 82.5	D) 99

Answer & Explanation Answer: C) 82.5

Explanation:

The given series

12 24 26.5 79.5 ? 330 follows a pattern that,

12 x 2 = 24

24 + 2.5 = 26.5

26.5 x 3 = 79.5

79.5 + 3 = 82.5

82.5 x 4 = 330

Hence, the missing number is 82.5

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Q:

Find the odd man out of the series?

128, 32, 14, 2.66, 0.88

A) 32	B) 14
C) 2.66	D) 0.88

Answer & Explanation Answer: B) 14

Explanation:

Here the given series is 128, 32, 14, 2.66, 0.88

128 / 4 = 32

32 / 3 = 10.666

10.666 / 4 = 2.666

2.666 / 3 = 0.888

Hence, the odd man in the given number series is 14.

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7 75088

Q:

Find the odd man out?

3, 12, 39, 120, 364

A) 364	B) 120
C) 39	D) 3

Answer & Explanation Answer: A) 364

Explanation:

The given number series is 3, 12, 39, 120, 364

$3 3 + 3^{2} = 3 + 9 = 12 12 + 3^{3} = 12 + 27 = 39 39 + 3^{4} = 39 + 81 = 120 120 + 3^{5} = 120 + 243 = 363 (Not 364)$

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7 75010

Q:

Which of the following statement(s) is/are TRUE?

I. √(64) + √(0.0064) + √(0.81) + √(0.0081) = 9.07
II. √(0.010201) + √(98.01) + √(0.25) = 11.51

A) Only I	B) Only II
C) Both I and II	D) Neither I nor II

Answer & Explanation Answer: A) Only I

Explanation:

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Q:

What is the value of (2 - tan60°) ?

A) -1/√3	B) (√3-4)/2√3
C) -1/2	D) 2-√3

Answer & Explanation Answer: D) 2-√3

Explanation:

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Q:

What is the value of (1/√3 - sin45)?

A) 1/2√3	B) (√2-√3)/√6
C) 1-√2	D) (4-√3)/2

Answer & Explanation Answer: B) (√2-√3)/√6

Explanation:

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Q:

Compute of 29292 x 9999 = ?

A) 222890708	B) 298290708
C) 292809708	D) 292890708

Answer & Explanation Answer: D) 292890708

Explanation:

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Q:

Which of the following combination of sides results in the formation of obtuse angled triangle?

A) 6,7,13	B) 5, 6, 8
C) 4, 5, 6	D) None of these

Quantitative Aptitude - Arithmetic Ability Questions

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