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Quantitative Aptitude - Arithmetic Ability

Quantitative Aptitude - Arithmetic Ability Questions

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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

A) 1

B) 2

C) 3

D) 4

Answer & Explanation Answer: B) 2

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What is the value of √[(1 + sinA)/(1 - sinA)]?

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

A) secA - tanA

B) cosecA + tanA

C) secA + tanA

D) cosecA - tanA

Answer & Explanation Answer: C) secA + tanA

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$If a^{3} + 3 a^{2} + 9 a = 1, then what is the value of a^{3} + (3 / a) ?$

A) 31	B) 26
C) 28	D) 24

A) 31

B) 26

C) 28

D) 24

Answer & Explanation Answer: C) 28

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If 1 dupatta is offered free on purchase of 4 dupattas priced Rs 1300 each what is the effective discount on each dupatta?

A) 66.67 percent	B) 20 percent
C) 25 percent	D) 12.5 percent

A) 66.67 percent

B) 20 percent

C) 25 percent

D) 12.5 percent

Answer & Explanation Answer: B) 20 percent

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

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

A) secA - tanA

B) cosecA + tanA

C) secA + tanA

D) cosecA - tanA

Answer & Explanation Answer: C) secA + tanA

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If cos 135° = x, then the value of x is

A) -1/√2	B) -√3/2
C) -1/2	D) 2

A) -1/√2

B) -√3/2

C) -1/2

D) 2

Answer & Explanation Answer: A) -1/√2

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The value of x for which the expressions 15x + 4 and 13x - 2 become equal is ______

A) -1	B) 1
C) -3	D) 3

A) -1

B) 1

C) -3

D) 3

Answer & Explanation Answer: C) -3

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If the value of √30 is approximately 5.477, then what is the approximate value of $\sqrt{\frac{5}{6}}$ ?

A) 0.853	B) 0.891
C) 0.913	D) 0.937

A) 0.853

B) 0.891

C) 0.913

D) 0.937

Answer & Explanation Answer: C) 0.913

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