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The perimeter of two similar triangles ABC and PQR are 36 cms and 24 cms respectively. If PQ = 10 cm then the length of AB is

A) 18 cm	B) 12 cm
C) 15 cm	D) 330 cm

A) 18 cm

B) 12 cm

C) 15 cm

D) 330 cm

Answer & Explanation Answer: C) 15 cm

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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

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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

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 the angles of a triangle are in the ratio of 2:3:4, then the difference of the measure of greatest angle and smallest angle is

A) 20°	B) 30°
C) 40°	D) 50°

A) 20°

B) 30°

C) 40°

D) 50°

Answer & Explanation Answer: C) 40°

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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

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