6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A group consists of 4 couples in which each of the 4 boys have one girl friend.In how many ways they can be arranged in a straight line such that boys and girls occupies alternate positions?

Answer

Answer : 1152

Total positions are 8.

In that boys can be arranged in 4 places and girls can be arranged in 4 places and hence this can be done in 2 ways.

i.e => 4! x 4! x 2 = 24 x 24 x 2=1152.

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Subject: Permutations and Combinations Exam Prep: CAT
Job Role: Bank PO

10 2832

Q:

A and B entered into a partnership with Rs.800 and Rs.1600 respectively. From 9th months onward they each decided to invest Rs.100 more on starting of each month. If total annual profit is Rs.7700 then find the profit share of A.

A) Rs.2550	B) Rs.3200
C) Rs.2650	D) Rs.2450

Answer & Explanation Answer: C) Rs.2650

Explanation:

A : B = (800 × 8+ 900+ 1000+ 1100+ 1200): (1600 × 8+ 1700+ 1800+ 1900+ 2000)
A : B = 53 : 101
Profit of A ⇒ 7700 ×53/154 = 2650 Rs.

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

0 2831

Q:

The product of two 2-digit numbers is 2160 and their H.C.F. is 12. The numbers are

A) (12, 60)	B) (72, 30)
C) (36, 60)	D) (60, 72)

Answer & Explanation Answer: C) (36, 60)

Explanation:

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

22 2824

Q:

5% of 400000?

A) 4000	B) 16000
C) 8000	D) 20000

Answer & Explanation Answer: D) 20000

Explanation:

5% of 400000

= 5 x 400000/100

= 20,000

Hence, 5% of 4,00,000 = 20,000

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

17 2824

Q:

What is the fourth proportional to 189, 273 and 153?

A) 117	B) 299
C) 221	D) 187

Answer & Explanation Answer: C) 221

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

4 2823

Q:

2 men or 3 women can complete a job in 96 days. Then 6 men and 7 women will complete the same job in how many days?

A) 18	B) 27
C) 20	D) 24

Answer & Explanation Answer: A) 18

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

5 2821

Q:

Average age of 20 students is 21 years. 2 students leave the group and 1 new student joins the group. The average now becomes 20 years. If age of one of the student who left the group is 26 years and the one who joined is 20 years, then what is the age (in years) of the other student who left the group?

A) 20	B) 14
C) 22	D) 16

Answer & Explanation Answer: B) 14

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

1 2820

Q:

If a= $x^{\frac{1}{3}} y^{\frac{1}{3}} + x^{\frac{- 1}{3}} y^{\frac{- 1}{3}}$ then $a^{3} - 3 a y - x$ is equal to

A) y^2x	B) x^2y
C) a^2x	D) a^2y

Quantitative Aptitude - Arithmetic Ability Questions

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