6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If cosA = x, then x is

A) √(1 - cos2A)	B) √(1 + sin2A)
C) √(1 + cos2A)	D) √(1 - sin2A)

Answer & Explanation Answer: D) √(1 - sin2A)

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Q:

If cosec 45° - sin 30° = x, then x is

A) 5/√3	B) (√6-1)/√2
C) √3+2	D) (2√2-1)/2

Answer & Explanation Answer: D) (2√2-1)/2

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Q:

Mayur can complete a work in 27 hours. If he is joined by Jayantika who is 100% more efficient, in what time will they together finish the work?

A) 6 hours	B) 3 hours
C) 9 hours	D) 10 hours

Answer & Explanation Answer: C) 9 hours

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Q:

If 3x - 2(4 - 3x) < 2x - 5 < 3x + 3; then the value of x is

A) 1	B) 2
C) 5	D) 0

Answer & Explanation Answer: D) 0

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Q:

Simplify $(b^{2} x 3 a^{2} z^{4}) \times (b^{2} x 4 a^{4} z 3) / (a^{3} b^{2} z 4)$

A) b2x7a3z3	B) b3x7a3 z3
C) b2x5a3 z3	D) b2x7a3z2

Answer & Explanation Answer: A) b2x7a3z3

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Q:

If cos 240° = x, then value of x is

A) -1/√2	B) -√3/2
C) 1/2	D) -1/2

Answer & Explanation Answer: D) -1/2

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Q:

Reflection of the point (2,5) in the x axis is

A) (2,5)	B) (-2,5)
C) (2,-5)	D) (-2,-5)

Answer & Explanation Answer: D) (-2,-5)

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Q:

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

A) cosA	B) sinA
C) cosecA	D) secA

Quantitative Aptitude - Arithmetic Ability Questions

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