Quantitative Aptitude - Arithmetic Ability Questions

Q:

If a + b = 10 and ab = 21, then the value of (a - b)2 is

A) 15 B) 16
C) 17 D) 18
 
Answer & Explanation Answer: B) 16

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Filed Under: Simplification
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Q:

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 18% per annum is Rs 81. The sum is ____.

A) Rs 2500 B) Rs 5000
C) Rs 10000 D) Rs 7500
 
Answer & Explanation Answer: A) Rs 2500

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Filed Under: Compound Interest
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Q:

The value of 1/64 is equal to square of

A) 0.125 B) 0.135
C) 0.145 D) 0.225
 
Answer & Explanation Answer: A) 0.125

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Q:

Of three positive numbers, the ratio of first and second is 5 : 2, ratio of second and third is 5 : 4. The product of first and third is 1800. What is the sum of the three numbers?

A) 43 B) 133
C) 119 D) 129
 
Answer & Explanation Answer: D) 129

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

If sin P + cosec P = 2, then the value of sin7P + cosec7P is

A) 1 B) 2
C) 3 D) 0
 
Answer & Explanation Answer: B) 2

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Q:

Two trains, one 150 m long and the other 130m long, coming from opposite directions crosssed each other in 7.2 seconds. The sum of speed of the two trains every hour would then be

 

A) 280 km B) 105 km
C) 70 km D) 140 km
 
Answer & Explanation Answer: D) 140 km

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Filed Under: Problems on Trains
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Q:

What is that least number that must be added to the product 684 × 686 to make it a perfect square?

A) 685 B) 1
C) 684 D) 686
 
Answer & Explanation Answer: B) 1

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Filed Under: Problems on Numbers
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Q:

The addition of a rational number and its reciprocal is 61/30. Calculate the number.

A) 5/6, 6/5 B) 5/6, 7/5
C) 7/6, 6/5 D) 7/6, 7/5
 
Answer & Explanation Answer: A) 5/6, 6/5

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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