6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Four numbers A, B, C and D are such that their overall average is 16. The average of A and B is 9.5. The average of C and D is

A) 22.5	B) 23
C) 21.5	D) 25.5

Answer & Explanation Answer: A) 22.5

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Q:

The area of a circle is 38.5 cm2. Find its circumference (in cm).

A) 1848	B) 1716
C) 1621	D) 1587

Answer & Explanation Answer: A) 1848

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Q:

What is the simplified value of ${(\frac{1}{cosec A + \cot A})}^{2}$ ?

A) sec A + tan A	B) (1 – cos A)/(1 + cos A)
C) (1 – cosec A)/(1 + cosec A)	D) sin A

Answer & Explanation Answer: B) (1 – cos A)/(1 + cos A)

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Q:

If X and Y are the two digits of the number 347XY such that the number is completely divisible by 80, then what is the value of X + Y?

A) 2	B) 4
C) 6	D) 8

Answer & Explanation Answer: B) 4

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Q:

If the radius of the cylinder is decreased by 20%, then by how much percent the height must be increased, so that the volume of the cylinder remains same?

A) 20	B) 36.25
C) 56.25	D) 65

Answer & Explanation Answer: C) 56.25

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Q:

If the measure of the interior angle of a regular polygon is 90 deg greater than the measure of its exterior angle, then how many sides does it have ?

A) 8	B) 9
C) 10	D) 12

Answer & Explanation Answer: A) 8

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Q:

Find the mean of the first 6 prime numbers?

A) 14/3	B) 3
C) 41/6	D) 13/2

Answer & Explanation Answer: C) 41/6

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Filed Under: Problems on Numbers
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Q:

Which smallest number must be subtracted from 400, so that the resulting number is completely divisible by 7?

A) 6	B) 1
C) 2	D) 4

Quantitative Aptitude - Arithmetic Ability Questions

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