Quantitative Aptitude - Arithmetic Ability Questions

Q:

2 ­- (cosA + sinA)2 is equal to

A) (cosecA -­ sinA)2 B) cosA ­- sinA
C) cosecA ­- sinA D) (cosA -­ sinA)2
 
Answer & Explanation Answer: D) (cosA -­ sinA)2

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Q:

What is the value of z2+1z2 when z = 5+26 ?

A) 49 B) 50
C) 98 D) 100
 
Answer & Explanation Answer: C) 98

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Q:

What is the value of (cot60 + 1/√3) ?

A) 4/√3 B) (2√2+√3)/2
C) 2/√3 D) (2√2+1)/√2
 
Answer & Explanation Answer: C) 2/√3

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Q:

Coefficient of x in (x + 9)(8 - 5x) is

A) 37 B) -53
C) -37 D) 53
 
Answer & Explanation Answer: C) -37

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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:

If [(a2 + b2  + ab)] + [(a2 + b2  ab)] = 1, then what is the value of (1  a2 )(1  b2 )?

A) 1/4 B) 4/7
C) 5/4 D) 3/4
 
Answer & Explanation Answer: D) 3/4

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Q:

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

A) 25673 B) 34664
C) 42763 D) 25556
 
Answer & Explanation Answer: C) 42763

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Q:

If x2+5x+6 = 0, then the value of 2xx2-7x+6 is

A) 1/6 B) 1/3
C) -1/6 D) -1/3
 
Answer & Explanation Answer: C) -1/6

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