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Q:

If a + b + c = 7/12, 3a – 4b + 5c = 3/4 and 7a – 11b – 13c = – 7/12, then what is the value of a + c?

A) 1/2	B) 5/12
C) 3/4	D) 1/4

Answer & Explanation Answer: B) 5/12

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If 3x + 4y – 11 = 18 and 8x – 6y + 12 = 6, then what is the value of 5x – 3y – 9?

A) 18	B) – 9
C) – 27	D) – 18

Answer & Explanation Answer: B) – 9

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Q:

If α and β are the roots of the equation $x^{2} + x - 1 = 0$ , then what is the equation whose roots are $α^{5} and β^{5}$ ?

A) x2 + 7x – 1 = 0	B) x2 – 7x – 1 = 0
C) x2 – 11x – 1 = 0	D) x2 + 11x – 1 = 0

Answer & Explanation Answer: D) x2 + 11x – 1 = 0

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Filed Under: Simplification
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Q:

What is the value of √121 + √12321 + √1234321 + √123454321?

A) 12345	B) 123456
C) 12344	D) 123454

Answer & Explanation Answer: C) 12344

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

Q:

How many natural numbers are there between √261 and √45109?

A) 144	B) 196
C) 168	D) 195

Answer & Explanation Answer: B) 196

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

What is the unit digit of $1^{5} + 2^{5} + 3^{5} + . . . + 20^{5}$ ?

A) 0	B) 5
C) 2	D) 4

Answer & Explanation Answer: A) 0

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Filed Under: Simplification
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Q:

What is the value of $\frac{1}{3 \times 7} + \frac{1}{7 \times 11} + \frac{1}{11 \times 15} + . . . + \frac{1}{899 \times 903}$ ?

A) 21/509	B) 18/403
C) 25/301	D) 29/31

Answer & Explanation Answer: C) 25/301

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Q:

If $(1 + \frac{1}{2}) (1 + \frac{1}{4}) (1 + \frac{1}{6}) (1 + \frac{1}{8}) (1 - \frac{1}{3}) (1 - \frac{1}{5}) (1 - \frac{1}{7}) = 1 + \frac{1}{x}$ , then what is the value of x?

A) 6	B) 8
C) 5	D) 7

Answer & Explanation Answer: B) 8

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Filed Under: Simplification
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