6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

ΔABC is right angled at B. If m∠A = 60 deg, then find the value of (secC + 2)

A) (2+2√3)/√2	B) 4/3
C) (2+2√3)/√3	D) 4/√3

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

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Filed Under: Volume and Surface Area
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Q:

If the standard deviation of a population is 7, what would be the population variance?

A) 14	B) 21
C) 49	D) 28

Answer & Explanation Answer: C) 49

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Filed Under: Probability
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Q:

ΔABC is similar to ΔDEF. Length of AB is 12 cm and length of the corresponding side DE is 8 cm. What is the ratio of Perimeter of ΔABC : Perimeter of ΔDEF?

A) 9:4	B) 4:9
C) 3:2	D) 2:3

Answer & Explanation Answer: C) 3:2

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Q:

Which of the following is the prime number series from 1 to 20?

A) 1, 2, 3, 5, 7, 11, 13, 17, 19	B) 3, 5, 7, 11, 13,17, 19
C) 2, 5, 7, 9, 11, 13, 17, 19	D) 2, 3, 5, 7,11, 13, 17, 19

Answer & Explanation Answer: D) 2, 3, 5, 7,11, 13, 17, 19

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Filed Under: Problems on Numbers
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Q:

If the side of the equilateral triangle is 6√3 cm, then what is length (in cm) of the circum radius of that triangle?

A) 4	B) 6
C) 8	D) 12

Answer & Explanation Answer: B) 6

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Q:

What is the value of 12 + 3(-2 x 3) - (18 / 6) ?

A) -5	B) 9
C) -9	D) 5

Answer & Explanation Answer: C) -9

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Filed Under: Simplification
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Q:

If the 1st and the 3rd term of an arithmetic progression are -10 and -4, what is the 12th term?

A) 26	B) 20
C) 17	D) 23

Answer & Explanation Answer: D) 23

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Filed Under: Numbers
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Q:

Two pipes namely A,B can fill a sump in 25 minutes and half an hour respectively and a pipe C can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity off the tank is

A) 450 gallons	B) 300 gallons
C) 240 gallons	D) 600 gallons

Quantitative Aptitude - Arithmetic Ability Questions

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