6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Product of digits of a 2digit number is 12. If we add 36 to the number, the new number obtained is a number formed by interchange of the digits. What is the number.

A) 62	B) 34
C) 26	D) 43

Answer & Explanation Answer: C) 26

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Q:

In an exam, the avarage marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies and Craft were 70. If the average marks in all seven subjects is 58, his score in maths was

A) 50	B) 52
C) 60	D) 74

Answer & Explanation Answer: D) 74

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Q:

The mean of the 5 smallest numbers from a group is 15 while the mean of all the 13 members of the group taken together is 17. What is the mean of the 8 largest numbers?

A) 18.50	B) 17.75
C) 18.75	D) 18.25

Answer & Explanation Answer: D) 18.25

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Q:

$If {(a + \frac{1}{a})}^{2} = 3, then the value of a^{18} + a^{12} + a^{6} + 1 is$

A) 3	B) 1
C) 0	D) 2

Answer & Explanation Answer: C) 0

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Q:

If $a + b + c = 15 a n d \frac{1}{a} + \frac{1}{b} + \frac{1}{c} = \frac{71}{a b c},$ then the $a^{3} + b^{3} + c^{3} - 3 a b c$ is

A) 160	B) 180
C) 200	D) 220

Answer & Explanation Answer: B) 180

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Q:

At least one diagonal bisects the other in a _____.

A) Trapezium	B) Isosceles trapezium
C) Kite	D) Cyclic quadrilateral

Answer & Explanation Answer: C) Kite

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Q:

The sum of all prime numbers between 18 and 32 is:

A) 99	B) 100
C) 102	D) 97

Answer & Explanation Answer: C) 102

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Q:

What is the value of [(cos 3θ + 2cos 5θ + cos 7θ)÷(cos θ + 2cos 3θ + cos 5θ)] + sin 2θ tan 3θ?

A) cos 2θ	B) sin 2θ
C) tan 2θ	D) cot θ sin 2θ

Quantitative Aptitude - Arithmetic Ability Questions

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