6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

ΔABC is right angled at B. If m ∠A = 60°, then what is the value of 1/√3 Cosec C?

A) 2/√3	B) 2/3
C) √2/√3	D) √2/3

Answer & Explanation Answer: A) 2/√3

Explanation:

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Q:

Find two numbers such that their mean proportion is 12 and third proportion is 768.

A) 3 and 24	B) 3 and 48
C) 6 and 48	D) 6 and 24

Answer & Explanation Answer: B) 3 and 48

Explanation:

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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:

Triangle DEF is right angled at E. If cot D = 5/12, then what is the value of sin F?

A) 5/12	B) 13/5
C) 5/13	D) 13/12

Answer & Explanation Answer: C) 5/13

Explanation:

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Q:

Five angles of a hexagon measure 116 deg each. What is the measure of the remaining angle?

A) 152 deg	B) 116 deg
C) 140 deg	D) 126 deg

Answer & Explanation Answer: C) 140 deg

Explanation:

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Filed Under: Area
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Q:

If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?

A) 18.25 percent	B) 22 percent
C) 38.88 percent	D) 28 percent

Answer & Explanation Answer: C) 38.88 percent

Explanation:

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Q:

A bag contains coins of denominations Rs.1, Rs.5 and Rs.10. Assuming there are equal number of Rs.1, Rs.5 and Rs.10, what will be the total number of coins in the bag be if the total money is Rs. 368?

A) 69	B) 96
C) 56	D) 65

Answer & Explanation Answer: A) 69

Explanation:

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Q:

If $a^{3} + \frac{1}{a^{3}} = 2,$ then the value of $\frac{a^{2} + 1}{a}$ ?

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

Quantitative Aptitude - Arithmetic Ability Questions

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