6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Product of digits of a 2-digit number is 15. If we add 18 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

A) 35	B) 15
C) 51	D) 21

Answer & Explanation Answer: A) 35

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Q:

If u : v = v : w, then what is the value of $u^{4} : v^{4}$ ?

A) u2 : wv	B) u2 : w2
C) u2 v : w3	D) u : w

Answer & Explanation Answer: B) u2 : w2

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Q:

What is the simplified value of ${cosec}^{6} A - \cot^{6} A - 3 {cosec}^{2} A \cot^{2} A$ ?

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

Answer & Explanation Answer: D) 1

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Q:

The value of $(0.3)^{2} / 100 =$ ?

A) 0.09	B) 0.0009
C) 0.009	D) 0.9

Answer & Explanation Answer: B) 0.0009

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Q:

If $\frac{a^{2} + b^{2}}{c^{2}} = \frac{b^{2} + c^{2}}{a^{2}} = \frac{c^{2} + a^{2}}{b^{2}} = \frac{1}{k} (k \neq 0)$ then k =

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

Answer & Explanation Answer: D) 1/2

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Q:

If a - b = 4 and ab = -3, then what is the value of $a^{3} - b^{3}$ ?

A) 21	B) 28
C) 23	D) -20

Answer & Explanation Answer: B) 28

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Q:

What is the value of $\sin (90 ° + 2 A) [4 - \cos 2 (90 ° - 2 A)] ?$

A) 2(cos3 A – sin3 A)	B) 2(cos3 A + sin3 A)
C) 4(cos6 A+ sin6 A)	D) 4(cos6 A – sin6 A)

Answer & Explanation Answer: D) 4(cos6 A – sin6 A)

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Q:

What is the value of $\frac{5.6 x 0.36 + 0.42 x 3.2}{0.8 x 2.1}$ ?

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

Quantitative Aptitude - Arithmetic Ability Questions

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