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If 19 $ 7 = 312 and 23 $ 9 = 448, then 31 $ 11 = ?

A) 231	B) 441
C) 641	D) 840

A) 231

B) 441

C) 641

D) 840

Answer & Explanation Answer: D) 840

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

In the following question, select the missing number from the given series.
19, 11, 13, 16, 15, 17, 13, 19, 21, ?

A) 10	B) 11
C) 12	D) 15

A) 10

B) 11

C) 12

D) 15

Answer & Explanation Answer: A) 10

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Filed Under: Number Series
Exam Prep: Bank Exams

If $\tan^{2} θ + c o t^{2} θ = 2$ , then what is the value of $2^{s e c θ \cos e c θ}$ ?

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

A) 0

B) 1

C) 2

D) 4

Answer & Explanation Answer: D) 4

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Filed Under: Simplification
Exam Prep: Bank Exams

If tan θ + cot θ = x, then what is the value of $\tan^{4} θ + \cot^{4} θ$ ?

A) (x3 – 3)2 + 2	B) (x4 – 2x) + 4
C) x2 (x2 – 4) + 2	D) x

A) (x3 – 3)2 + 2

B) (x4 – 2x) + 4

C) x2 (x2 – 4) + 2

D) x

Answer & Explanation Answer: C) x2 (x2 – 4) + 2

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Filed Under: Simplification
Exam Prep: Bank Exams

If $x = \frac{4 \sqrt{ab}}{\sqrt{a} + \sqrt{b}}$ , then what is the value of $\frac{x + 2 \sqrt{a}}{x - 2 \sqrt{a}} + \frac{x + 2 \sqrt{b}}{x - 2 \sqrt{b}}$ ?

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

A) 0

B) 2

C) 4

D) 1

Answer & Explanation Answer: B) 2

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Filed Under: Simplification
Exam Prep: Bank Exams

If (x + y + z) = 12, xy + yz + zx = 44 and xyz = 48, then what is the value of $x^{3} + y^{3} + z^{3}$ ?

A) 104	B) 144
C) 196	D) 288

A) 104

B) 144

C) 196

D) 288

Answer & Explanation Answer: D) 288

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Filed Under: Simplification
Exam Prep: Bank Exams

If $\frac{\sqrt{5 + x} + \sqrt{5 - x}}{\sqrt{5 + x} - \sqrt{5 - x}} = 3$ ,then what is the value of x ?

A) 5/2	B) 25/3
C) 4	D) 3

A) 5/2

B) 25/3

C) 4

D) 3

Answer & Explanation Answer: D) 3

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Filed Under: Simplification
Exam Prep: Bank Exams

For what value of k, the expression $x^{6} - 18 x^{3} + k$ will be a perfect square?

A) -9	B) 81
C) 9	D) -81

A) -9

B) 81

C) 9

D) -81

Answer & Explanation Answer: B) 81

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Filed Under: Simplification
Exam Prep: Bank Exams

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