Quantitative Aptitude - Arithmetic Ability Questions

Q:

Expand and simplify (x + 5)2 + (x - 3)2

A) 2(x2 + 2x - 17) B) 2(x2 - 2x + 17)
C) 2(x2 - 2x - 17) D) 2(x2 + 2x + 17)
 
Answer & Explanation Answer: D) 2(x2 + 2x + 17)

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Q:

 What is the value of (cosec45 + √3/2) ?

A) 5/6 B) (4+√3)/2√3
C) (2√2+√3)/2 D) 3√3/2
 
Answer & Explanation Answer: C) (2√2+√3)/2

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Q:

If Sinx = 4/5, then Sec2x - 1 = ?

A) 16/25 B) 25/9
C) 9/16 D) 16/9
 
Answer & Explanation Answer: D) 16/9

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Q:

When [x + (1/x)] = 5, then what is the value of [x – (1/x)]?

A) 11 B) ± √22
C) 21 D) ± √21
 
Answer & Explanation Answer: D) ± √21

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Q:

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

A) -19/23 B) 19/23
C) -1/23 D) 1/23
 
Answer & Explanation Answer: B) 19/23

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) AI B) OU
C) AD D) IO
 
Answer & Explanation Answer: C) AD

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Q:

If a.sin 45°.cos 45°.tan60° = tan 245° ­ cos60° then find the value of a ?

A) 13 B) 3
C) 1 D) 32
 
Answer & Explanation Answer: A) 13

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Q:

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 12% per annum is Rs 72. What is the value of given sum (in Rs)?

A) 10000 B) 20000
C) 5000 D) 15000
 
Answer & Explanation Answer: C) 5000

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