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Quantitative Aptitude - Arithmetic Ability

Quantitative Aptitude - Arithmetic Ability Questions

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What is the value of $z^{2} + \frac{1}{z^{2}}$ when $z = 5 + 2 \sqrt{6}$ ?

A) 49	B) 50
C) 98	D) 100

A) 49

B) 50

C) 98

D) 100

Answer & Explanation Answer: C) 98

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0 1011

If (-1/2) * ( x - 5) + 3 = -5/2, then what is the value of x?

A) 16	B) 4
C) -6	D) -4

A) 16

B) 4

C) -6

D) -4

Answer & Explanation Answer: A) 16

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0 1011

If x tan 60° + cos 45° = sec 45° then the value of $x^{2} + 1$ is

A) 6/7	B) 7/6
C) 5/6	D) 6/5

A) 6/7

B) 7/6

C) 5/6

D) 6/5

Answer & Explanation Answer: B) 7/6

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0 1011

If $\sec^{2} A {cosec}^{2} A = x$ , then x is

A) sec2A + cosec2A + 2	B) tan2A + cot2A - 2
C) tan2A + cot2A + 2	D) sec2A + cosec2A - 2

A) sec2A + cosec2A + 2

B) tan2A + cot2A - 2

C) tan2A + cot2A + 2

D) sec2A + cosec2A - 2

Answer & Explanation Answer: C) tan2A + cot2A + 2

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0 1011

What is the reflection of the point (2, 3) in the line y = 4?

A) (2, 5)	B) (2, -5)
C) (-2, -5)	D) (-2, 5)

A) (2, 5)

B) (2, -5)

C) (-2, -5)

D) (-2, 5)

Answer & Explanation Answer: A) (2, 5)

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0 1011

What is the reflection of the point (5, -2) in the line x = -1?

A) (-7 , -2)	B) (5 , 0)
C) (7 , -2)	D) (5 , 2)

A) (-7 , -2)

B) (5 , 0)

C) (7 , -2)

D) (5 , 2)

Answer & Explanation Answer: A) (-7 , -2)

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0 1011

If (8 - 10x) - (13x - 2) = -9, then the value of x is

A) -19/23	B) 19/23
C) -1/23	D) 1/23

A) -19/23

B) 19/23

C) -1/23

D) 1/23

Answer & Explanation Answer: B) 19/23

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0 1010

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

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

A) 1

B) 3

C) 2

D) 4

Answer & Explanation Answer: B) 3

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