6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Factorise $x^{2} + 3 x - 18$

A) (x+18)(x-1)	B) (x-1)(x+18)
C) (x+6)(x-3)	D) (x-6)(x+3)

Answer & Explanation Answer: C) (x+6)(x-3)

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Q:

If Sinx = 4/5, then ${Sec}^{2} x - 1 =$ ?

A) 16/25	B) 25/9
C) 9/16	D) 16/9

Answer & Explanation Answer: D) 16/9

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Q:

Find the 4th proportional to 9, 17 and 27.

A) 57	B) 48
C) 51	D) 53

Answer & Explanation Answer: C) 51

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Filed Under: Ratios and Proportions
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Q:

What is the value of Sin 30° + Cos 30°?

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

Answer & Explanation Answer: C) (1 + √3)/2

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Q:

If the angles of a triangle are in the ratio of 1 : 4 : 7, then find the ratio of the greatest angle to the smallest angle.

A) 7:2	B) 2:3
C) 7:1	D) 3:5

Answer & Explanation Answer: C) 7:1

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Filed Under: Ratios and Proportions
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Q:

Find the unit place digit in ${(192)}^{102} + {(193)}^{103}$

A) 0	B) 1
C) 3	D) 5

Answer & Explanation Answer: B) 1

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Q:

A number when divided by the sum of 555 and 445 gives two times their difference as quotient and 30 as the remainder. The number is

A) 220030	B) 22030
C) 1220	D) 1250

Answer & Explanation Answer: A) 220030

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Filed Under: Problems on Numbers
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Q:

If the diameter of a hemisphere is 21 cm, then what is the volume (in cub.cm) of hemisphere?

A) 2810	B) 1250.5
C) 1725.25	D) 2425.5

Quantitative Aptitude - Arithmetic Ability Questions

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