6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If 2x - 3 = 3x - 5, then the numerical value of ${(x - 3)}^{2}$ is

A) 5	B) 1
C) -5	D) -1

Answer & Explanation Answer: B) 1

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Q:

If 3x - 7 = 5x - 1, then the numerical value of ${(x - 4)}^{2}$ is

A) 1	B) 49
C) -1	D) -49

Answer & Explanation Answer: B) 49

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Q:

If tan(A/2) = x, then the value of x is

A) √[(1 + cosA)/(1 - cosA)]	B) (1 - cosA)/(1 + cosA)
C) (1 + cosA)/(1 - cosA)	D) √[(1 - cosA)/(1 + cosA)]

Answer & Explanation Answer: D) √[(1 - cosA)/(1 + cosA)]

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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:

Select the odd letters from the given alternatives.

A) DFH	B) KMO
C) QTW	D) SUW

Answer & Explanation Answer: C) QTW

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Q:

The inradius of a equilateral triangle is 10 cm. What is the circum-radius (in cm) of the same triangle?

A) 5	B) 10√3
C) 20	D) 20√3

Answer & Explanation Answer: C) 20

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Q:

If cosAcotA/(1 - sinA) = x, then the value of x is

A) 1 - cosecA	B) 1 + cosecA
C) 1 + secA	D) 1 - secA

Answer & Explanation Answer: B) 1 + cosecA

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Q:

Mukesh got series of discount 30%, 25%, 15% on his shirt. Find out the single equivalent discount.

A) 52.34%	B) 38.35%
C) 55.38%	D) 57.38%

Quantitative Aptitude - Arithmetic Ability Questions

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