Quantitative Aptitude - Arithmetic Ability Questions

Q:

Square of (7 ­- 4x) is

A) 16x2 - 28x + 49 B) 49 -­ 28x ­- 16x2
C) 49 - ­ 56x -­ 16x2 D) 16x2 - 56x + 49
 
Answer & Explanation Answer: D) 16x2 - 56x + 49

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Q:

If sec -5π/4 = x, then the value of x is

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

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Q:

If (4x - 3) - (2x + 1) = 4, then the value of x is

A) 0 B) 1
C) 2 D) 3
 
Answer & Explanation Answer: C) 2

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Q:

Three clocks are designed to alarm in every hour, two hours and three hours respectively. If they all alrmed together three hours before, then after how many hours will they next alarm together?

A) 3 hours B) 6 hours
C) 2 hours D) 1 hour
 
Answer & Explanation Answer: A) 3 hours

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Q:

The equation of a line is given by 4y-6x+9=0. Find the slope of other line which is perpendicular to it.

 

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

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Q:

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)

A) 50 1/7 sq.cm B) 50 2/7 sq.cm
C) 75 1/7 sq.cm D) 75 2/7 sq.cm
 
Answer & Explanation Answer: B) 50 2/7 sq.cm

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Q:

ΔABC is similar to ΔPQR. Length of AB is 36 cm and length of the corresponding side PQ is 16 cm. If area of ΔABC is 1296 sq cm, what is the area of ΔPQR?

A) 128 sq cm B) 512 sq cm
C) 64 sq cm D) 256 sq cm
 
Answer & Explanation Answer: D) 256 sq cm

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Q:

In triangle ABC, AB = 8 cm, angle A is bisected internally to intersect BC at D. BD = 6 cm and DC = 7.5 cm. What is the length of CA?

A) 12 cm B) 10 cm
C) 12.5 cm D) 10.5 cm
 
Answer & Explanation Answer: B) 10 cm

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