6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

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

A) Throat	B) Eye
C) Ear	D) Skin

Answer & Explanation Answer: A) Throat

Explanation:

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Q:

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

A) FJ	B) KO
C) RV	D) WZ

Answer & Explanation Answer: D) WZ

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Exam Prep: Bank Exams , CAT

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Q:

Which of the following is correct?

A) (3x - 2y)2 = 9x2 - 12xy + 4y2	B) (3x - 2y)2 = 9x2 - 6xy + 4y2
C) (3x + 2y)2 = 9x2 - 12xy + 4y2	D) (3x + 2y)2 = 9x2 - 6xy + 4y2

Answer & Explanation Answer: A) (3x - 2y)2 = 9x2 - 12xy + 4y2

Explanation:

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Q:

What is the value of $z^{2} + \frac{1}{z^{2}}$ when $z = 5 + 2 \sqrt{6}$ ?

A) 49	B) 50
C) 98	D) 100

Answer & Explanation Answer: C) 98

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Q:

By which least number should 5000 be divided so that it becomes a perfect square?

A) 2	B) 5
C) 10	D) 15

Answer & Explanation Answer: A) 2

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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:

What is the value of $\frac{\sqrt{128} + \sqrt{72}}{\sqrt{32}}$

A) 3.5	B) 7
C) 4.5	D) 9

Answer & Explanation Answer: A) 3.5

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Q:

From a point on a bridge across the river, the angles of depression of the banks on opposite sides of the river are 30° and 45° respectively. If the bridge is at a height of 2.5m from the banks, then the width of the river is (take √3 = 1.732)

A) 5.83m	B) 6.83m
C) 5.76m	D) 6.87m

Quantitative Aptitude - Arithmetic Ability Questions

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