6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If the difference between the mode and median is 2, then the difference between the median and mean is:

A) 2	B) 1
C) 3	D) 4

Answer & Explanation Answer: B) 1

Explanation:

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Filed Under: Probability
Exam Prep: Bank Exams

33 3700

Q:

3, 12, 5, ?

A) 36	B) 26
C) 30	D) 24

Answer & Explanation Answer: C) 30

Explanation:

$3 3^{2} + 3 = 12 5 5^{2} + 5 = 30$

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

10 3700

Q:

In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there ?

A) 205	B) 194
C) 209	D) 159

Answer & Explanation Answer: C) 209

Explanation:

We may have (1 boy and 3 girls)or(2boys and 2 girls)or(3 boys and 1 girl)or(4 boys).

Required number of ways = ( ${}^{6}C_{1} \times {}^{4}C_{3}$ ) + $({}^{6}C_{2} \times {}^{4}C_{2})$ + ( ${}^{6}C_{3} \times {}^{4}C_{1}$ ) + ( ${}^{6}C_{4}$ )

= (24+90+80+15)

= 209.

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

7 3690

Q:

A bucket contains a mixture of two liquids A and B in the proportion 7: 5. If 9 litres of the mixture is replaced by 9 litres of liquid B, then the ratio of the two liquid becomes 7: 9. How much of the liquid A was there in the bucket ?

A) 21 litres	B) 15 litres
C) 23 litres	D) 18 litres

Answer & Explanation Answer: A) 21 litres

Explanation:

Suppose the two liquids A and B are 7x litres and 5x litres respectivel Now, when 9 litres of mixture are taken out,

Now, when 9 liters of liquid B are added

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Filed Under: Alligation or Mixture
Exam Prep: AIEEE , Bank Exams , GATE

9 3682

Q:

1 bottle of honey costs Rs 240 but a pack of 4 of the same bottles costs Rs 768. What is the effective discount (in %) on the pack?

A) 16	B) 25
C) 10	D) 20

Answer & Explanation Answer: D) 20

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

0 3682

Q:

5th January 2018 was a Friday. Which of the following years will also have 5th January on a Friday?

A) 2022	B) 2020
C) 2024	D) 2023

Answer & Explanation Answer: C) 2024

Explanation:

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Filed Under: Calendar
Exam Prep: Bank Exams

15 3678

Q:

Determine the nominal rate of interest if:
The periodic rate is 1.75% per quarter.

A) 7%	B) 8%
C) 9%	D) 10%

Answer & Explanation Answer: A) 7%

Explanation:

j=mi

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

3 3672

Q:

The B.D. and T.D. on a certain sum is Rs.200 and Rs.100 respectively. Find out the sum.

A) Rs. 400	B) Rs. 300
C) Rs. 100	D) Rs. 200

Answer & Explanation Answer: D) Rs. 200

Explanation:

$F = \frac{B D \times T D}{B D - T D} = \frac{200 \times 100}{200 - 100} = \frac{200 \times 100}{100} = R s . 200$

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Filed Under: Banker's Discount

1 3666

Quantitative Aptitude - Arithmetic Ability Questions

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