6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Common factor of $12 a^{4} b^{6}, 18 a^{6} c^{2}, 36 a^{2} b^{2}$ is

A) 36a2	B) 108b2
C) 6a2b2	D) 6a2

Answer & Explanation Answer: D) 6a2

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Q:

If a - b = 4 and ab = -3, then what is the value of $a^{3} - b^{3}$ ?

A) 21	B) 28
C) 23	D) -20

Answer & Explanation Answer: B) 28

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Q:

If $\tan^{2} A / {(secA - 1)}^{2} = x$ , then the value of x is

A) (1+cosecA) / (1-cosecA)	B) (1+cosA)(1-cosA)
C) (1+cosA) / (1-cosA)	D) (1+cosecA)(1-cosecA)

Answer & Explanation Answer: C) (1+cosA) / (1-cosA)

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Q:

If the standard deviation of a population is 6.5, what would be the population variance?

A) 40.25	B) 42.25
C) 18.25	D) 13

Answer & Explanation Answer: B) 42.25

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Q:

At what point does the line 2x + 5y = -6 cuts the X-axis?

A) (3, 0)	B) (0, 3)
C) (-3, 0)	D) (0, -3)

Answer & Explanation Answer: C) (-3, 0)

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Q:

The points A(x,2), B(2,1) and C(6,3) are collinear. Find x?

A) 4	B) -2
C) -4	D) 2

Answer & Explanation Answer: C) -4

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Q:

If X is a prime number, LCM of X and its successive number would be

A) X	B) X (X+1)
C) (X+1)	D) X/(X+1)

Answer & Explanation Answer: B) X (X+1)

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Q:

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

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

Quantitative Aptitude - Arithmetic Ability Questions

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