6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the average of first 39 even numbers ?

A) 39	B) 40
C) 20	D) 68

Answer & Explanation Answer: B) 40

Explanation:

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Q:

A wholesaler sells a watch to a retailer at a gain of 37% and the retailer sells it to a customer at a loss of 25%. If the customer pays Rs 2,620.125, what had it cost the wholesaler?

A) Rs 2550	B) Rs 2692
C) Rs 3327	D) Rs 2408

Answer & Explanation Answer: A) Rs 2550

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The selling price of 6 bananas is equal to the cost price of 8 bananas. Then the percentage of profit is

A) 20	B) 33 1/3
C) 25	D) 30

Answer & Explanation Answer: B) 33 1/3

Explanation:

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Q:

If $\sec^{2} A + {cosec}^{2} A = X$ , then the value of X is

A) tan2A cot2A	B) sinA cosA
C) secA cosecA	D) sec2A cosec2A

Answer & Explanation Answer: D) sec2A cosec2A

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If (1/cos θ) – (1/cot θ) = 1/P, then what is the value of cos θ?

A) (P + 1)/(P – 1)	B) (P2+ 1)/2P
C) 2(P2+ 1)/P	D) 2P/(P2+ 1)

Answer & Explanation Answer: D) 2P/(P2+ 1)

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Q:

$0.02 \bar{45}$ written as a vulgar fraction in its simplest form = ?

A) 9/370	B) 27/1111
C) 27/1100	D) 9/37

Answer & Explanation Answer: C) 27/1100

Explanation:

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Filed Under: Decimal Fractions
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Q:

If $\frac{a}{b + c} = \frac{b}{c + a} = \frac{C}{b + a}$ then which one of the following statements is correct?

A) Each fraction is equal to 1 or -1	B) Each fraction is equal to 1/2 or 1
C) Each fraction is equal to 1/2 or -1	D) Each fraction is equal to 1.2 only

Answer & Explanation Answer: C) Each fraction is equal to 1/2 or -1

Explanation:

a/(b+c) = b/(c+a) = c/(a+b)

Taking reciprocal and adding 1 to each ratio we get;

(b+c)/a + 1 = b/(c+a) + 1 = c/(a+b) + 1

Or (a+b+c)/a = (a+b+c)/b = (a+b+c)/c

So this can only be equal when a=b=c or a+b+c = 0

When a=b=c we get

a/(b+c)= ½When a+b+c = 0 we get

b+c = -a

So a/(b+c) = -1

So the ratios are ½ or -1

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Q:

If the measure of the interior angle of a regular polygon is $180^{0}$ , then how many sides does it have?

A) 6	B) 8
C) 9	D) 5

Quantitative Aptitude - Arithmetic Ability Questions

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