6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The mean of the data 1, 1/2, 1/2, 3/4, 1/4, 2, 1/2, 1/4, 3/4 is

A) 15/18	B) 13/18
C) 7/9	D) 8/9

Answer & Explanation Answer: B) 13/18

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Q:

A regular hexagonal base prism has height 8 cm and side of base is 4 cm. What is the total surface area (in cm2) of the prism?

A) 54(3 + √3)	B) 36(3 + √3)
C) 48(4 + √3)	D) 24(4 + √3)

Answer & Explanation Answer: C) 48(4 + √3)

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Q:

Raghu's tanker can fill a cistern in 4 hours. After half the cistern is filled, three more similar tankers are opened. What is the total time taken to fillthe cistern completely?

A) 2h 30 min	B) 2h
C) 3h	D) 2h 40 min

Answer & Explanation Answer: A) 2h 30 min

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Q:

If tanA + tanB = X, then the value of X is

A) (tanA - tanB)/(1 + tanAtanB)	B) (tanA + tanB)/(1 - tanAtanB)
C) (tanA + tanB)/(1 + tanAtanB)	D) (tanA - tanB)/(1 - tanAtanB)

Answer & Explanation Answer: B) (tanA + tanB)/(1 - tanAtanB)

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Q:

If a + b = 1, then $a^{4} + b^{4} - a^{3} - b^{3} - 2 a^{2} b^{2} + ab$ is equal to

A) 1	B) 2
C) 4	D) 0

Answer & Explanation Answer: D) 0

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Q:

α and β are the roots of quadratic equation. If α + β = 8 and α – β = 2√5, then which of the following equation will have roots $α^{4} and β^{4}$ ?

A) x2 – 1522x + 14641 = 0	B) x2 + 1921x + 14641 = 0
C) x2– 1764x + 14641 = 0	D) x2+ 2520x + 14641 = 0

Answer & Explanation Answer: A) x2 – 1522x + 14641 = 0

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Q:

If $M = 0.1 + {(0.1)}^{2} + {(0.01)}^{2} and N = 0.3 + {(0.03)}^{2} + {(0.003)}^{2}$ , then what is the value of M + N?

A) 0.411009	B) 0.413131
C) 0.313131	D) 0.131313

Answer & Explanation Answer: A) 0.411009

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Q:

What is the value of √[(1 + sinA)/(1 - sinA)]?

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

Quantitative Aptitude - Arithmetic Ability Questions

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