Quantitative Aptitude - Arithmetic Ability Questions

Q:

ABCD is a kite where m∠A is 90° and m∠C is 60°. If length of AB is 6 cm, what is the length of diagonal AC?

A) 6(√2+√3) cm B) 2(√3+√6) cm
C) 2(√2+√3) cm D) 3(√2+√6) cm
 
Answer & Explanation Answer: D) 3(√2+√6) cm

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Filed Under: Area
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Q:

The two equal sides of an isosceles triangle is 20 cm each and the third side is 30 cm. What is the area(in cm2) of the triangle?

A) 50√5 B) 100
C) 75√7 D) 175
 
Answer & Explanation Answer: C) 75√7

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Q:

The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?

A) 16.66% B) 66.66%
C) 33.33% D) 100%
 
Answer & Explanation Answer: C) 33.33%

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Filed Under: Probability
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Q:

In the following question, select the odd word from the given alternatives.

A) Tiger B) Ostrich
C) Lion D) Cheetah
 
Answer & Explanation Answer: B) Ostrich

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Filed Under: Odd Man Out
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Q:

What is the value of tan3A?

A) (3tanA -­ tan3A)/(1 -­ 3tan2A) B) (3tanA + tan3A)/(1 + 3tan2A)
C) (3tanA -­ tan3A)/(1 + 3tan2A) D) (3tanA + tan3A)/(1-­ 3tan2A)
 
Answer & Explanation Answer: A) (3tanA -­ tan3A)/(1 -­ 3tan2A)

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Filed Under: Simplification
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Q:

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 198, then what is the difference between the first and the third number?

A) 216 B) 297
C) 661 D) 431
 
Answer & Explanation Answer: A) 216

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Q:

Among three numbers, the first is twice the second and thrice the third, If the average of three numbers is 517, then what is the difference between the first and the third number?

A) 564 B) 759
C) 485 D) 799
 
Answer & Explanation Answer: A) 564

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Q:

If θ be positive acute angle and 5cosθ + 12sinθ = 13, then the value of cosθ is

A) 12/13 B) 5/13
C) 5/12 D) 1/5
 
Answer & Explanation Answer: B) 5/13

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