Quantitative Aptitude - Arithmetic Ability Questions

Q:

Expand and simplify (3x + 2)2*(4x -­ 3) -­ (2x3 - 9x2 + 12x -­ 24)

A) 34x3 + 30x2 -­ 32x -­ 12 B) 34x3 + 30x2 -­ 32x + 12
C) 34x3 -­ 30x2 -­ 32x + 12 D) 34x3 -­ 30x2 + 32x -­ 12
 
Answer & Explanation Answer: B) 34x3 + 30x2 -­ 32x + 12

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Q:

In DEF measure of angle E is 90°. If secD = 25/7, and DE = 1.4cm, then what is the length (in cm) of side DF?

A) 5 B) 4.8
C) 4 D) 5.6
 
Answer & Explanation Answer: A) 5

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Q:

If 40 is 0.05% of x, then what is the value of x?

A) 80000 B) 8000
C) 800 D) 80
 
Answer & Explanation Answer: A) 80000

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Q:

If x = y + 2 then x3 -  y3 -  z3 is

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

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Q:

If cosx.cosy + sinx.siny = -1 then cosx + cosy is

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

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Q:

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

A) America B) India
C) Bangladesh D) Pakistan
 
Answer & Explanation Answer: A) America

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Q:

XYZ is a right angled triangle and ∠Y = 90°. If XY = 2.5 cm and YZ = 6 cm then the circumradius of XYZ is

A) 6.5 cm B) 3.25 cm
C) 3 cm D) 2.5 cm
 
Answer & Explanation Answer: B) 3.25 cm

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Q:

If x , y, and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0 then (x+y+z) is equal to

A) -12 B) 0
C) 8 D) 12
 
Answer & Explanation Answer: D) 12

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