6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The diagonal of a square equals the side of an equilateral triangle. If the area of the square is 12 sq cm, what is the area of the equilateral triangle?

A) 12√3 sq cm	B) 6√3 sq cm
C) 12√2 sq cm	D) 24 sq cm

Answer & Explanation Answer: B) 6√3 sq cm

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Q:

If a(x + y) = b(x - y) = 2ab, then the value of $2 (x^{2} + y^{2})$

A) 2(a2 - b2)	B) 2(a2 + b2)
C) 4(a2 - b2)	D) 4(a2 + b2)

Answer & Explanation Answer: D) 4(a2 + b2)

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Q:

If $2 x + \frac{1}{3 x} = 5$ , the value of $\frac{5 x}{6 x^{2} + 20 x + 1}$ is

A) 1/4	B) 1/6
C) 1/5	D) 1/7

Answer & Explanation Answer: D) 1/7

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Q:

If tan π/3c + cosec π/6c = x, then x is

A) (1-√2)/√2	B) (√3+4)/2√3
C) √3+2	D) (2√2-1)/2

Answer & Explanation Answer: C) √3+2

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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:

If Cos θ = 5/13, then Cosec θ = ?

A) 5/12	B) 12/5
C) 13/5	D) 13/12

Answer & Explanation Answer: D) 13/12

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Q:

The value of -261+(-380)-(-521)+821-(-121)

A) 833	B) 825
C) 822	D) 800

Answer & Explanation Answer: C) 822

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Q:

If the Arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is

A) 10	B) 12
C) 14	D) 16

Quantitative Aptitude - Arithmetic Ability Questions

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