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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Calculate the value of 55-5, if the value of √5 = 2.236.

A) 0.809 B) 0.89
C) 0.089 D) 0.807
 
Answer & Explanation Answer: A) 0.809

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1972
Q:

If 2x + 3y = 0 and 3x ­- 4y = 34, then x ­- y = ______

A) 10 B) -10
C) 2 D) -2
 
Answer & Explanation Answer: A) 10

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Filed Under: Simplification
Exam Prep: Bank Exams

2 1971
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
Exam Prep: Bank Exams

0 1971
Q:

What is the average of all numbers between 11 and 80 which are divisible by 6?

A) 46 B) 47
C) 44 D) 45
 
Answer & Explanation Answer: D) 45

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Filed Under: Average
Exam Prep: Bank Exams

1 1971
Q:

What should be the missing digit so that the number 347_547 becomes exactly divisible by 11?

A) 5 B) 3
C) 9 D) 2
 
Answer & Explanation Answer: B) 3

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

0 1971
Q:

A canal of a village can be cleaned by 24 villagers in 12 days. The number of days in which 36 villagers can clean the canal is ?

A) 18 B) 8
C) 72 D) 16
 
Answer & Explanation Answer: B) 8

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Filed Under: Time and Work
Exam Prep: Bank Exams

0 1971
Q:

Sum of twice a fraction and 3 times its reciprocal is 29/3. What is the fraction?

A) 2/9 B) 5/4
C) 4/5 D) 9/2
 
Answer & Explanation Answer: D) 9/2

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Filed Under: Decimal Fractions
Exam Prep: Bank Exams

4 1970
Q:

The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?

A) 15.25 years B) 14 years
C) 14.75 years D) Cannot be determined
 
Answer & Explanation Answer: A) 15.25 years

Explanation:

Total sum of age of 80 students of the class = 15 X 80 = 1200 years
15 students → 15 X 16 = 240 years
25 students → 25 X 14 = 350 years
Sum of 40 students = 590 years
Total age of remaining 40 students = 1200 – 590 = 610
So, average age = 15.25 years

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Filed Under: Average
Exam Prep: Bank Exams

0 1970