6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If $a^{3} + \frac{1}{a^{3}} = 2,$ then the value of $\frac{a^{2} + 1}{a}$ ?

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: B) 2

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Q:

What is the value of $[(\sin 59 ° \cos 31 ° + \cos 59 ° \sin 31 °) \div (\cos 20 ° \cos 25 ° - \sin 20 ° \sin 25 °)] ?$

A) 1/√2	B) 2√2
C) √3	D) √2

Answer & Explanation Answer: D) √2

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Q:

Select the odd word from the given alternatives.

A) Stream	B) Rivulet
C) River	D) Valley

Answer & Explanation Answer: D) Valley

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) America	B) India
C) Bangladesh	D) Pakistan

Answer & Explanation Answer: A) America

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Q:

In ΔABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

A) 80°	B) 40°
C) 90°	D) 50°

Answer & Explanation Answer: C) 90°

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Q:

The radius of a sphere is 6 cm. It is melted and drawn into a wire of radius 0.2 cm. The length of the wire is

A) 81 m	B) 80 m
C) 75 m	D) 72 m

Answer & Explanation Answer: D) 72 m

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Q:

Which of the following is correct?

A) (3x - 2y)2 = 9x2 - 12xy + 4y2	B) (3x - 2y)2 = 9x2 - 6xy + 4y2
C) (3x + 2y)2 = 9x2 - 12xy + 4y2	D) (3x + 2y)2 = 9x2 - 6xy + 4y2

Answer & Explanation Answer: A) (3x - 2y)2 = 9x2 - 12xy + 4y2

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Q:

What is the value of (cos 45 - 1/3) ?

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

Quantitative Aptitude - Arithmetic Ability Questions

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