Quantitative Aptitude - Arithmetic Ability Questions

Q:

√[(1 ­ sinA)/(1 + sinA)] is equal to?

A) secA -­ tanA B) cosecA -­ cotA
C) secA + tanA D) cosecA + cotA
 
Answer & Explanation Answer: A) secA -­ tanA

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Q:

Which of the following quadratic equations has real roots?

A) 4x2 -­ 9x + 6 = 0 B) 3x2 -­ 2x + 6 = 0
C) 2x2 -­ 7x + 6 = 0 D) x2 -­ 2x + 2 = 0
 
Answer & Explanation Answer: C) 2x2 -­ 7x + 6 = 0

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Q:

Δ LMN is right angled at M. If m∠N = 60 deg., then Tan L =______.

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

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Q:

If x = 4aba+b, then what is the value of x+2ax-2a+x+2bx-2b ?

A) 0 B) 2
C) 4 D) 1
 
Answer & Explanation Answer: B) 2

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Q:

If x=2+3, then the value of x2-x+1x2+x+1 is

A) 2/3 B) 3/4
C) 4/5 D) 3/5
 
Answer & Explanation Answer: D) 3/5

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Q:

Product of digits of a 2-digit number is 72. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

A) 98 B) 89
C) 78 D) 87
 
Answer & Explanation Answer: B) 89

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Q:

What is the area (in sq cm) of an equilateral triangle of side 14 cm?

A) 49√3 B) 98√3
C) (49/2)√3 D) (49/4)√3
 
Answer & Explanation Answer: A) 49√3

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Q:

The radius of a sphere is 6 cm. It is melted and drawn into a wire of radius 0.2 cm. The length of the wire is

A) 81 m B) 80 m
C) 75 m D) 72 m
 
Answer & Explanation Answer: D) 72 m

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