6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The third proportional of two numbers 24 and 36 is

A) 48	B) 54
C) 72	D) 108

Answer & Explanation Answer: B) 54

Explanation:

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Q:

What is the value of (cosec30 - 1/√3)?

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

Answer & Explanation Answer: A) (2√3-1)/√3

Explanation:

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Q:

If $a^{3} + b^{3} = 19$ and ab = -6 , then what is the value of a + b?

A) 5	B) 7
C) 1	D) -5

Answer & Explanation Answer: C) 1

Explanation:

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Q:

The value of $Cot 17 ° (Cot 73 ° {Cos}^{2} 22 ° + \frac{1}{Cot 17 ° {Sec}^{2} 68 °})$ is

A) 0	B) 1
C) 2	D) √3

Answer & Explanation Answer: B) 1

Explanation:

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Q:

If $\tan^{4} θ + \tan^{2} θ = 1$ then the value of $\cos^{4} θ + \cos^{2} θ$ is

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

Answer & Explanation Answer: C) 1

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Q:

Find two natural numbers whose sum is 85 andtheleast common multiple is 102.

A) 30 & 55	B) 17 & 68
C) 35& 55	D) 51 & 34

Answer & Explanation Answer: D) 51 & 34

Explanation:

Let a + b = 85→b = 85 –a

LCM(a,b) =102→ab = 102

k→a(85 –a) = 102k, where k is a natural number.

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Filed Under: Numbers
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Q:

What is the area (in sq cm) of a circle whose circumference is 22 cm?

A) 77	B) 38.5
C) 44	D) 88

Answer & Explanation Answer: B) 38.5

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Filed Under: Area
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Q:

What is the area (in sq cm) of a rectangle of perimeter 48 cm and breadth 10 cm?

A) 140	B) 480
C) 240	D) 440

Quantitative Aptitude - Arithmetic Ability Questions

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