6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If Cot θ = 21/20, then what is the value of Cosec θ?

A) 21/29	B) 29/21
C) 20/29	D) 29/20

Answer & Explanation Answer: D) 29/20

Explanation:

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Q:

If cosAcotA/(1 - sinA) = x, then the value of x is

A) 1 - cosecA	B) 1 + cosecA
C) 1 + secA	D) 1 - secA

Answer & Explanation Answer: B) 1 + cosecA

Explanation:

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Q:

If $x (3 - \frac{2}{x}) = \frac{3}{x}$ , then the value of $x^{2} + \frac{1}{x^{2}}$ will be

A) 3 1/9	B) 3 2/9
C) 2 1/9	D) 2 4/9

Answer & Explanation Answer: D) 2 4/9

Explanation:

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Q:

Simplify : $\sqrt[3]{- 2197} \times \sqrt[3]{- 125} \div \sqrt[3]{\frac{27}{512}}$

A) 492/7	B) 520/3
C) 554/7	D) 571/5

Answer & Explanation Answer: B) 520/3

Explanation:

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Q:

If 1/√(cosec2A - 1) = x, then value of x is

A) cotA	B) tanA
C) sinA	D) cosA

Answer & Explanation Answer: B) tanA

Explanation:

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Q:

The value of $\frac{a}{a - b} + \frac{b}{b - a}$ is

A) a+b/a-b	B) -1
C) 2ab	D) 1

Answer & Explanation Answer: D) 1

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Q:

Consider two-digit numbers which remain the same when the digits interchange their positions. What is the average of such two-digit numbers?

A) 33	B) 44
C) 55	D) 66

Answer & Explanation Answer: C) 55

Explanation:

All such 2 digit numbers are 11,22,33,44....... upto 99

Forms an AP

So sum = n/2(a+l)

= 9/2(11+99)

Average = sum/9 = ½(11+99) = 55

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Q:

Select the odd letters from the given alternatives.

A) DFH	B) KMO
C) QTW	D) SUW

Quantitative Aptitude - Arithmetic Ability Questions

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