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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Find the circumference (in cm) of a circle of radius 7 cm.

 

A) 56 B) 44
C) 16 D) 32
 
Answer & Explanation Answer: B) 44

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

2 24015
Q:

Find the number of zeroes in 129!

 

A) 31 B)  33    
C)  35   D) 37
 
Answer & Explanation Answer: A) 31

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

0 24009
Q:

Read the following information and answer the questions given below:

A has 28 elements, B has 32 elements and A U B has 40 elements.

How many elements does A ∩ B have?

A) 12 B) 8
C) 10 D) 20
 
Answer & Explanation Answer: D) 20

Explanation:
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Filed Under: Quantitative Aptitude - Arithmetic Ability

0 23999
Q:

The sum of the number of boys and girls in a school is 150. if the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is : 

A) 60 B) 70
C) 80 D) 90
 
Answer & Explanation Answer: A) 60

Explanation:

We have : x + (x% of 150 )= 150 

=> x+(x/100)*150] = 150

=> 52x = 150  

=> x = (150*2)/5 = 60

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Filed Under: Percentage

43 23992
Q:

The banker's gain on a bill due 1 year hence at 12% per annum is Rs. 6. The true discount

is:

A) 62 B) 58
C) 47 D) 50
 
Answer & Explanation Answer: D) 50

Explanation:

T.D. =(B.G. x 100)/ (R x T)= Rs. (6 x 100)/( 12 x 1) = Rs. 50.

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Filed Under: Banker's Discount

8 23961
Q:

Find the odd one out.

 

 

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

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 23931
Q:

A fort had provision of food for 150 men for 45 days. After 10 days, 25 men left the fort. The number of days for which the remaining food will last, is:

A) 29/5 B) 37/4
C) 42 D) 54
 
Answer & Explanation Answer: C) 42

Explanation:

After 10 days : 150 men had food for 35 days.

 

 

 

Suppose 125 men had food for x days.

 

 

 

Now, Less men, More days (Indirect Proportion)

 

 

 

 125 : 150 :: 35 : x    =>    125 x x = 150 x 35

 

 

 

 =>

 

 

 

=> x = 42.

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Filed Under: Quantitative Aptitude - Arithmetic Ability

38 23928
Q:

The ages of Krish and Vaibhav are in the proportion of 3 : 5. After 9 years, the proportion of their ages will be 3 : 4. Then the current age of Vaibhav is:

A) 10 B) 13
C) 15 D) 18
 
Answer & Explanation Answer: C) 15

Explanation:

Krish’s age = 3A and Vaibhav’s age = 5A


(3A+9)/(5A+9) = 3/4


=> 4 (3A + 9) = 3 (5A + 9)


=> A = 3


Therefore, Vaibhav’s age = 15 years.

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Filed Under: Problems on Ages

45 23928