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If $\frac{\sqrt{2 + x} + \sqrt{2 - x}}{\sqrt{2 + x} - \sqrt{2 - x}} = 2,$ then the value of X is

A) 4⁄5	B) 3⁄5
C) 8/5	D) 1/5

A) 4⁄5

B) 3⁄5

C) 8/5

D) 1/5

Answer & Explanation Answer: C) 8/5

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability

If ${(a + \frac{1}{a})}^{2} = 3,$ then the value of $a^{6} - \frac{1}{a^{6}}$ will be

A) 1	B) 3
C) 0	D) 2

A) 1

B) 3

C) 0

D) 2

Answer & Explanation Answer: C) 0

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Filed Under: Quantitative Aptitude - Arithmetic Ability

The average of 12 numbers is 9. If each number is multiplied by 2 and added to 3, the average of the new set of numbers is

A) 9	B) 18
C) 21	D) 27

A) 9

B) 18

C) 21

D) 27

Answer & Explanation Answer: C) 21

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Filed Under: Quantitative Aptitude - Arithmetic Ability

$(2^{51} + 2^{52} + 2^{53} + 2^{54} + 2^{55})$ is divided by

A) 23	B) 58
C) 124	D) 127

A) 23

B) 58

C) 124

D) 127

Answer & Explanation Answer: C) 124

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Filed Under: Quantitative Aptitude - Arithmetic Ability

If $\tan 45^{0} = c o t \emptyset, t h e n t h e v a l u e o f \emptyset, i n r a d i a n s i s$

A) π	B) π9
C) π2	D) π12

A) π

B) π9

C) π2

D) π12

Answer & Explanation Answer: B) π9

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Filed Under: Quantitative Aptitude - Arithmetic Ability

If a+b+c = 6 and ab+bc+ca = 1, then the value of bc(b+c) + ca(c+a) +ab(a+b) +3abc is

A) 33	B) 66
C) 55	D) 23

A) 33

B) 66

C) 55

D) 23

Answer & Explanation Answer: B) 66

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Filed Under: Quantitative Aptitude - Arithmetic Ability

If X= $\frac{3}{2}$ , then the value of $27 x^{3} - 54 x^{2} + 36 x - 11$ is

A) 1138	B) 1158
C) 1238	D) 1258

A) 1138

B) 1158

C) 1238

D) 1258

Answer & Explanation Answer: D) 1258

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Filed Under: Quantitative Aptitude - Arithmetic Ability

Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then average speed is

A) 72 kmph	B) 71.11 kmph
C) 36 kmph	D) 35.55 kmph

A) 72 kmph

B) 71.11 kmph

C) 36 kmph

D) 35.55 kmph

Answer & Explanation Answer: D) 35.55 kmph

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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