6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If tanA + tanB = X, then the value of X is

A) (tanA - tanB)/(1 + tanAtanB)	B) (tanA + tanB)/(1 - tanAtanB)
C) (tanA + tanB)/(1 + tanAtanB)	D) (tanA - tanB)/(1 - tanAtanB)

Answer & Explanation Answer: B) (tanA + tanB)/(1 - tanAtanB)

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Q:

If the sum of squares of three consecutive natural number is 2702. Then, what will be the middle number?

A) 29	B) 30
C) 31	D) 32

Answer & Explanation Answer: B) 30

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Q:

What is the reflection of the point (-2, 5) in the line x = -1?

A) (-2 , -7)	B) (0 , 5)
C) (2 , 5)	D) (-2 , 7)

Answer & Explanation Answer: B) (0 , 5)

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Q:

ABCD is a cyclic quadrilateral $∠ D B A = 50 ° a n d ∠ A D E = 33 °, t h e n t h e m e a s u r e m e n t o f ∠ B C D i s$

A) 83°	B) 80°
C) 75°	D) 60°

Answer & Explanation Answer: A) 83°

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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Q:

The sum of the digits of a 2-digit number is 8. If we add 36 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?

A) 26	B) 62
C) 34	D) 43

Answer & Explanation Answer: A) 26

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Q:

Two numbers are 35% and 40% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

A) 7.69 percent	B) 5 percent
C) 8.33 percent	D) 12.5 percent

Answer & Explanation Answer: C) 8.33 percent

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Q:

If $x = \frac{4 \sqrt{ab}}{\sqrt{a} + \sqrt{b}}$ , then what is the value of $\frac{x + 2 \sqrt{a}}{x - 2 \sqrt{a}} + \frac{x + 2 \sqrt{b}}{x - 2 \sqrt{b}}$ ?

A) 0	B) 2
C) 4	D) 1

Answer & Explanation Answer: B) 2

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Q:

The average of 100 observations was calculated as 35.It was found later, that one of the observation was misread as 83 instead of 53. The correct average is :

A) 32.7	B) 34.7
C) 35.7	D) 36.7

Quantitative Aptitude - Arithmetic Ability Questions

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