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$If cosA + \cos^{2} A = 1 then the value of \sin^{2} A + \sin^{4} A is$

A) 1/2	B) 1/4
C) 1	D) 0

A) 1/2

B) 1/4

C) 1

D) 0

Answer & Explanation Answer: C) 1

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

If x +y = √3 and x - y = √2, then the value of 8xy $(x^{2} + y^{2})$ is

A) 6	B) √6
C) 5	D) √5

A) 6

B) √6

C) 5

D) √5

Answer & Explanation Answer: C) 5

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Filed Under: Simplification

If a + b = 17 and a - b = 9 then the value of $(4 a^{2} + 4 b^{2})$ is,

A) 710	B) 720
C) 730	D) 740

A) 710

B) 720

C) 730

D) 740

Answer & Explanation Answer: D) 740

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Filed Under: Quantitative Aptitude - Arithmetic Ability

The value of $\cos^{2} 20 ° + \cos^{2} 70 °$ is

A) √2	B) 2
C) 1	D) 1/√2

A) √2

B) 2

C) 1

D) 1/√2

Answer & Explanation Answer: C) 1

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

$If x + \frac{1}{x} = 2, then x^{2} + \frac{1}{x^{2}} = ?$

A) 0	B) 2
C) 4	D) 8

A) 0

B) 2

C) 4

D) 8

Answer & Explanation Answer: B) 2

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Filed Under: Quantitative Aptitude - Arithmetic Ability

If $x + \frac{1}{x} \neq 0 and x^{3} + \frac{1}{x^{3}} = 0, then the value of {(x + \frac{1}{x})}^{4} is :$

A) 9	B) 12
C) 15	D) 16

A) 9

B) 12

C) 15

D) 16

Answer & Explanation Answer: A) 9

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Filed Under: Simplification

If $3^{10} \times 27^{2} = 9^{2} \times 3^{n}$ then the value of n is

A) 10	B) 12
C) 15	D) 20

A) 10

B) 12

C) 15

D) 20

Answer & Explanation Answer: B) 12

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Filed Under: Simplification

In $∆ ABC$ , ∠A = 90°, $AD ⊥ BC$ and AD = BD = 2 cm. The length of CD is

A) 3 cm	B) 3.5 cm
C) 3.2 cm	D) 2 cm

A) 3 cm

B) 3.5 cm

C) 3.2 cm

D) 2 cm

Answer & Explanation Answer: B) 3.5 cm

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

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