6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is

A) 6x2y - 8xy2 + 15y2z	B) 6x2y + 8xy2 - 15y2z
C) 6x2y + 8xy2 - 15y2z - 20xyz	D) 6x2y - 8xy2 + 15y2z + 20xyz

Answer & Explanation Answer: B) 6x2y + 8xy2 - 15y2z

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Q:

Find the odd word/letters/number pair from the given alternatives

A) 36-72	B) 17-34
C) 28-49	D) 24-48

Answer & Explanation Answer: C) 28-49

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) VR	B) LH
C) SW	D) FB

Answer & Explanation Answer: C) SW

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Q:

If sinC + sinD =X, then the value of X is?

A) 2cos[(C+D)/2]sin[(C-D)/2]	B) 2sin[(C+D)/2]cos[(C-D)/2]
C) 2cos[(C+D)/2]cos[(C-D)/2]	D) 2sin[(C+D)/2]sin[(D-C)/2]

Answer & Explanation Answer: B) 2sin[(C+D)/2]cos[(C-D)/2]

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Q:

If x/2 - [4(15/2 - x/3)]/3 = -x/18, then what is the value of x?

A) -10	B) 9/8
C) 10	D) -9/8

Answer & Explanation Answer: C) 10

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Q:

If $x = 3^{\frac{1}{3}} - 3^{\frac{- 1}{3}}$ , then $3 x^{2} + 9 x$ is equal to

A) 5	B) 6
C) 7	D) 8

Answer & Explanation Answer: D) 8

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Q:

What is the value of Sin 30° - Cosec 45°?

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

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

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Q:

What is the value of cos (90 – B) sin (C – A) + sin (90 + A) cos (B + C) – sin (90 – C) cos (A + B)?

A) 1	B) sin ( A + B – C)
C) cos ( B + C – A)	D) 0

Quantitative Aptitude - Arithmetic Ability Questions

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