Quantitative Aptitude - Arithmetic Ability Questions

Q:

If ABCD is a trapezium, AC and BD are the diagonals intersecting each other at point O. Then AC : BD is

A) AB + AD : DC + BC B) AO - OC : OB - OD
C) AB : CD D) AD : BC
 
Answer & Explanation Answer: B) AO - OC : OB - OD

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Filed Under: Volume and Surface Area
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Q:

The lengths of diagonals of a rhombus are 24cm and 10cm the perimeter of the rhombus (in cm ) is :

A) 52 B) 56
C) 68 D) 72
 
Answer & Explanation Answer: A) 52

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Filed Under: Volume and Surface Area
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Q:

If cosec 45° - sin 30° = x, then x is

A) 5/√3 B) (√6-1)/√2
C) √3+2 D) (2√2-1)/2
 
Answer & Explanation Answer: D) (2√2-1)/2

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Filed Under: Simplification
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Q:

If the standard deviation of a population is 4.5, what would be the population variance?

A) 20.25 B) 20
C) 9 D) 18
 
Answer & Explanation Answer: A) 20.25

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Filed Under: Probability
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Q:

40.36 ­- (9.347 -­ x ) -­ 29.02 = 3.68. Find x.

A) -56.353 B) 1.687
C) -17.007 D) 82.407
 
Answer & Explanation Answer: B) 1.687

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Q:

If 3x2 - ax + 6 = ax2 + 2x + 2 has only one (repeated) solution, then the positive integral solution of a is

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

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Q:

In a triangle ABC, a line is drawn from C which bisects AB at point D. Find the ratio of area of the triangles DBC and ABC.

 

 

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

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Q:

If the difference between the roots of the equation Ax2  Bx + C = 0 is 4, then which of the following is TRUE?

A) B2 – 16A2 = 4AC + 4B2 B) B2 – 10A2 = 4AC + 6A2
C) B2 – 8A2 = 4AC + 10A2 D) B2 – 16A2 = 4AC + 8B2
 
Answer & Explanation Answer: B) B2 – 10A2 = 4AC + 6A2

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