Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average of 3 consecutive even numbers is A. If next 5 even numbers are added, then what is the average of these 8 numbers?

A) A + 3 B) A + 4
C) A + 5 D) A + 7
 
Answer & Explanation Answer: C) A + 5

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Q:

A man spends 59% of his income and saves the rest. What percentage of his expenditure does he save?

A) 72.57 percent B) 83.19 percent
C) 89.09 percent D) 69.49 percent
 
Answer & Explanation Answer: D) 69.49 percent

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Q:

If 1 + secA = x, then the value of x is

A) sinAtanA/(1 + cosA) B) √[sinAtanA/(1 - cosA)]
C) sinAtanA/(1 - cosA) D) √[sinAtanA/(1 + cosA)]
 
Answer & Explanation Answer: C) sinAtanA/(1 - cosA)

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Q:

If θ is positive acute angle and 4sin2θ = 3, then the value of tan θ - cot θ/2 is

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

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Q:

What will be the net discount percentage of three successive discounts of 20%, 10% and 30%?

A) 45.2 B) 49.6
C) 54.6 D) 50.4
 
Answer & Explanation Answer: B) 49.6

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Q:

The weights of two iron balls are 3.5 kg and 7.5 kg. What is the percentage weight of the 1st ball with respect to 2nd ball.

A) 46 2/3% B) 35%
C) 46 1/3% D) 45%
 
Answer & Explanation Answer: A) 46 2/3%

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Q:

What is the value of (91 + 92 + 93 + ......... +140)?

A) 5775 B) 11550
C) 17325 D) 23100
 
Answer & Explanation Answer: A) 5775

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Q:

If x = 6+26, then what is the value of x-1 + 1x-1 ?

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

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