6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If the present ages of a father and his son are 48 years and 28.8 years old respectively, then the father can say to his son, "I was ......... of your present age when you were born".

A) half	B) two-third
C) one-fifth	D) one-third

Answer & Explanation Answer: B) two-third

Explanation:

The present age of Father (f) = 48 and present age of son (s) = 28.8
The age of father at his sons birth is 48 - 28.8 = 19.2
Therefore the age of father was 2/3rd of his son's age at the time of his sons birth

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Filed Under: Problems on Ages
Exam Prep: AIEEE , Bank Exams , CAT

1 1583

Q:

Which of the numbers given below is the square root of 14161?

A) 119	B) 121
C) 131	D) 141

Answer & Explanation Answer: A) 119

Explanation:

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Filed Under: Square Roots and Cube Roots
Exam Prep: Bank Exams

0 1583

Q:

If x +y = √3 and x - y = √2, then the value of 8xy $(x^{2} + y^{2})$ is

A) 6	B) √6
C) 5	D) √5

Answer & Explanation Answer: C) 5

Explanation:

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Filed Under: Simplification

1 1582

Q:

The number of trees in a town is 17640. If the numbers of trees increases annually at the rate of 5%, then how many trees were there 2 years ago?

A) 14000	B) 15000
C) 16000	D) 18000

Answer & Explanation Answer: C) 16000

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

6 1581

Q:

ABCDEF is a regular hexagon of side 12 cm. What is the area (in cm2) of the triangle ECD?

A) 18√3	B) 24√3
C) 36√3	D) 42√3

Answer & Explanation Answer: C) 36√3

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

2 1581

Q:

Sum of lengths of all edges of a cube is 84 cm, find its volume?

A) 686 cubic cms	B) 343 cubic cms
C) 171.5 cubic cms	D) 514.5 cubic cms

Answer & Explanation Answer: B) 343 cubic cms

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

1 1581

Q:

A shopkeeper marks up his wares by 80% and offers 20% discount. What will be the selling price (in Rs) if the cost price is Rs 450?

A) 548	B) 748
C) 848	D) 648

Answer & Explanation Answer: D) 648

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

5 1580

Q:

An army of 12000 consists of Europeans and Indians. The average height of a European is 5ft 10 inches and that of an Indian is 5ft 9 inches and that of the whole army is 5ft 9 3/4 inches. Then the number of Indians in the army is ?

A) 3000	B) 4000
C) 5500	D) 2700

Quantitative Aptitude - Arithmetic Ability Questions

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