6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Price of petrol increased from Rs 60/liter to Rs 75/liter. How much should the consumption of petrol be reduced (in %) so as to increase expenditure by only 10%?

A) 12	B) 20
C) 15	D) 18

Answer & Explanation Answer: A) 12

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If a vendor sells a coconut at Rs 14.4 he makes 10% loss. If he wants to make 25% profit, then at what price (in Rs) should he sell?

A) 18	B) 20
C) 16	D) 22

Answer & Explanation Answer: B) 20

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

A prime number contains the digit X at unit’s place. How many such digits of X are possible?

A) 3	B) 4
C) 5	D) 6

Answer & Explanation Answer: D) 6

Explanation:

For prime no units place cannot be occupied by even number except for 2

Thus no of digits occupying unit digit of prime numbers = 6 (1,2,3,5,7,9)

Example 2,3,5,7,11,19 in itself are prime numbers

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Filed Under: Numbers
Exam Prep: Bank Exams

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Q:

Rs 6300 is divided among A, B and C in the ratio of 1/2 : 1 : 3/5. What is the share (in Rs) of B?

A) 3300	B) 2700
C) 3000	D) 4200

Answer & Explanation Answer: C) 3000

Explanation:

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Filed Under: Partnership
Exam Prep: Bank Exams , CAT

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Q:

A and B invest in a business in the ratio 2 : 5. If 50% of the total profit goes to charity and A's share is Rs 3.6 lakhs, the total profit is Rs __________ lakhs.

A) 12.6	B) 25.2
C) 37.8	D) 16.8

Answer & Explanation Answer: B) 25.2

Explanation:

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Filed Under: Partnership
Exam Prep: Bank Exams

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Q:

Which of the following pair of numbers is the solution of the equation $3^{x + 2} + 3^{- x} = 10$ ?

A) 0, 2	B) 0, -2
C) 1, -1	D) 1, 2

Answer & Explanation Answer: B) 0, -2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In how many different ways can the letters of the word 'HAPPYHOLI' be arranged?

A) 89,972	B) 90,720
C) 72,000	D) 81,000

Answer & Explanation Answer: B) 90,720

Explanation:

The given word HAPPYHOLI has 9 letters

These 9 letters can e arranged in 9! ways.

But here in the given word letters H & P are repeated twice each

Therefore, Number of ways these 9 letters can be arranged is

$\frac{9!}{2! x 2!} = \frac{9 x 8 x 7 x 6 x 5 x 4 x 3}{2} = 90, 720 ways .$

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Filed Under: Permutations and Combinations
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

37 trees are planted in a straight line such that distance between any two consecutive trees is same. A car takes 20 seconds to reach the 13th tree. How much more time (in seconds) will it take to reach the last tree?

A) 36	B) 40
C) 57	D) 60

Quantitative Aptitude - Arithmetic Ability Questions

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