6500+ Quantitative Aptitude Questions and Answers With Explanation

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 sec 330°?

A) 2	B) -2/√3
C) -2	D) 2/√3

Answer & Explanation Answer: D) 2/√3

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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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Q:

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

A) 16.8	B) 17
C) 16.5	D) 17.5

Answer & Explanation Answer: B) 17

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Filed Under: Average
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Q:

ABCD is an isosceles trapezium such that AD||BC, AB = 5 cm, AD = 8 cm and BC = 14 cm. What is the area (in cm2) of trapezium?

A) 36	B) 44
C) 88	D) 144

Answer & Explanation Answer: B) 44

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Filed Under: Volume and Surface Area
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Q:

A can complete a work in 20 days and B can complete the same work in 25 days. If both of them work together, then in 3 days what percent of the total work will be completed?

A) 9	B) 12
C) 25	D) 27

Answer & Explanation Answer: D) 27

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Filed Under: Time and Work
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Q:

What number, from the following should be deducted from 1184 to make it exactly divisible by 21?

A) 15	B) 12
C) 8	D) 7

Quantitative Aptitude - Arithmetic Ability Questions

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