6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Number of composite numbers lying between 67 and 101 is

A) 27	B) 24
C) 26	D) 23

Answer & Explanation Answer: A) 27

Explanation:

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Q:

Marked price of an article is Rs 520 and selling price is Rs 384.8. What is the discount percentage?

A) 26	B) 24.42
C) 35.13	D) 29

Answer & Explanation Answer: A) 26

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Q:

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

I. x2+ 30x + 81 = 0

II.y2-9y -162 = 0

A) x > y	B) x>y
C) x < y	D) x

Answer & Explanation Answer:

Explanation:

x^2+ 30x + 81 = 0
x^2+ 27x + 3x + 81 = 0
x = -3, -27
y^2-9y -162 = 0
y^2-18y + 9y -162 = 0
y = -9, 18
Hence, no relationship can be established between x and y

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Q:

If x – (1/x) = 3, then what is the value of $(2 x^{4} + 3 x^{3} + 13 x^{2} - 3 x + 2) / (3 x^{4} + 3)$ ?

A) 1/3	B) 2/3
C) 4/3	D) 5/3

Answer & Explanation Answer: C) 4/3

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Q:

The distance between the points (2, 7) and (k, -5) is 13. What is the value of k?

A) -7	B) 7
C) 6	D) -6

Answer & Explanation Answer: B) 7

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Q:

If $2^{x + 4} - 2^{x + 2} = 3$ , then the value of x?

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

Answer & Explanation Answer: D) -2

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Q:

What is the value of [1 – sin (90 – 2A)] / [1 + sin (90 + 2A)]?

A) sinA cosA	B) cot2A
C) tan2A	D) sin2A cosA

Answer & Explanation Answer: C) tan2A

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Q:

If x + (1/x) = √13, then what is the value of $x^{5}$ – (1/ $x^{5}$ )?

A) 169	B) 169√3
C) 393	D) 507

Quantitative Aptitude - Arithmetic Ability Questions

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