Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average revenues of 11 consecutive years of a company is Rs 77 lakhs. If the average of first 6 years is Rs 72 lakhs and that of last 6 years is Rs 84 lakhs, What is the revenue for the Sixth year.

A) Rs 91 lakhs B) Rs 87 lakhs
C) Rs 85 lakhs D) Rs 89 lakhs
 
Answer & Explanation Answer: D) Rs 89 lakhs

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Q:

If cosA + cos2A = 1 then the value of sin2A + sin4A is

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

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Q:

A sum of money becomes 77/50 of itself in 18/5 years when invested at simple interest. What is the rate (in percentage) of interest per annum?

A) 20 B) 18
C) 12 D) 15
 
Answer & Explanation Answer: D) 15

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Q:

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

 

A) 12 B) 8
C) 16 D) 4
 
Answer & Explanation Answer: C) 16

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Q:

What is the value of sec -2π/3 ?

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

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Q:

Δ ABC is right angled at B. If m∠A = 60°, then what is the value of sec C.sin A?

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

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Q:

If x3-2x=3x, then the value of x2+1x2 will be

A) 3 1/9 B) 3 2/9
C) 2 1/9 D) 2 4/9
 
Answer & Explanation Answer: D) 2 4/9

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Q:

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

A) 132 B) 145
C) 187 D) 144
 
Answer & Explanation Answer: D) 144

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