6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of sin 330°?

A) 2	B) 2/√3
C) √2	D) -1/2

Answer & Explanation Answer: D) -1/2

Explanation:

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Q:

The line passing through the point (5,a) and point (4,3) is perpendicular to the line x - 6y = 8. What is the value of 'a'?

A) -3	B) -2
C) 4	D) 5

Answer & Explanation Answer: A) -3

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Q:

Given that the polynomial $(x^{2} + ax + b)$ leaves that same remainder when by (x –1) or (x + 1) What are the values of a and b respectively?

A) 4 and 0	B) 0 and 3
C) 3 and 0	D) 0 and any interger

Answer & Explanation Answer: D) 0 and any interger

Explanation:

Since x^2+ ax + b when divided by x-1 or x+1 leaves the same remainder

So on putting x=1 and x=-1 we get the same value

1+a+b = 1-a+b

2a=0

a=0

here b can take any value as it will always get cancelled out

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Q:

If 5 - 2x ≥ 4 - x and 3(2 - x) > 2 - 4x; then x can take which of the following values?

A) 3	B) 2
C) -3	D) -5

Answer & Explanation Answer: C) -3

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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:

Two students appeared for an examination. One of them secured 22 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are _______.

A) 121 and 99	B) 43 and 21
C) 58 and 36	D) 86 and 64

Answer & Explanation Answer: A) 121 and 99

Explanation:

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Q:

If $\frac{- 5 x}{3} + 2 = x - 6$ , then find the value of x?

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: C) 3

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Q:

Which among the following is a mismatched pair of religion practiced and its holy book?

A) Islam : Quran	B) Sikhism : Guru Granth Saheb
C) Jainism : Upanishad	D) Christianity : Bible

Quantitative Aptitude - Arithmetic Ability Questions

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