6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If $x (3 - \frac{2}{x}) = \frac{3}{x}$ , then the value of $x^{2} + \frac{1}{x^{2}}$ will be

A) 3 1/9	B) 3 2/9
C) 2 1/9	D) 2 4/9

Answer & Explanation Answer: D) 2 4/9

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Filed Under: Simplification
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Q:

$\tan^{3} A is equal to$

A) 3tanA - tan3A(1 - 3tan2A)	B) 3tanA + tan3A(1 - 3tan2A)
C) 3tanA - tan3A(1 + 3tan2A)	D) 3tanA + tan3A(1 + 3tan2A)

Answer & Explanation Answer: A) 3tanA - tan3A(1 - 3tan2A)

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Q:

If $a^{2} + \frac{1}{a^{2}} = 38$ , then find the value of $(a - \frac{1}{a})$ ?

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

Answer & Explanation Answer: C) 6

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Q:

What is the value of cos (90 – B) sin (C – A) + sin (90 + A) cos (B + C) – sin (90 – C) cos (A + B)?

A) 1	B) sin ( A + B – C)
C) cos ( B + C – A)	D) 0

Answer & Explanation Answer: D) 0

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Q:

Two men are on opposite sides of a tower. They measure the angles of elevation of the top of the tower as 30 ̊ and 45 ̊ respectively. If the height of the tower is 50 m, the distance between the two men is (Take √3 = 1.73)

A) 136.5 m	B) 50 √3 m
C) 100 √3 m	D) 135.5 m

Answer & Explanation Answer: A) 136.5 m

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Filed Under: Height and Distance
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Q:

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 28090, and Rs 29775.4 respectively, what is the rate of interest?

A) 6 percent	B) 3 percent
C) 12 percent	D) 10 percent

Answer & Explanation Answer: A) 6 percent

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Filed Under: Compound Interest
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Q:

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

A) 27	B) 125
C) 8	D) 729

Answer & Explanation Answer: C) 8

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

What will be the roots of the quadratic equation $x^{2} - 25 x + 156 = 0$ ?

A) 12, 13	B) 25, 1
C) 9, 16	D) 31, 6

Quantitative Aptitude - Arithmetic Ability Questions

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