6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Suresh starts working as a analyst on an annual salary of Rs. 160000. If he receives a 15% pay-rise each year, the number of years he has worked for the company, when his annual salary became Rs. 279841 is

A) 3.5 yrs	B) 4 yrs
C) 4.5 yrs	D) 5 yrs

Answer & Explanation Answer: B) 4 yrs

Explanation:

From the given data in the question,

$279841 = 160000 x {(1 + \frac{15}{100})}^{t} \frac{279841}{160000} = {(\frac{115}{100})}^{t}$

t = 4 years.

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Filed Under: Percentage
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6 3138

Q:

In how many ways the letters of the word 'CIRCUMSTANCES' can be arranged such that all vowels came at odd places and N always comes at end?

A) 1,51,200 ways.	B) 5,04,020 ways
C) 72,000 ways	D) None of the above

Answer & Explanation Answer: A) 1,51,200 ways.

Explanation:

In circumcstances word there are 3C's, 2S's, I, U,R, T, A, N, E

Total = 13 letters

But last letter must be N

Hence, available places = 12

In that odd places = 1, 3, 5, 7, 9, 11

Owvels = 4

This can be done in 6P4 ways

Remaining 7 letters can be arranged in 7!/3! x 2! ways

Hence, total number of ways = 6P4 x 7!/3! x 2! = 360 x 5040/12 = 1,51,200 ways.

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Filed Under: Permutations and Combinations
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3 3137

Q:

In an election between two candidates, the winning candidate got 70% of the valid votes and won by a majority of 9000 votes. If out of total votes polled 90% votes are valid, then what is the total number of votes polled?

A) 30000	B) 25000
C) 22500	D) 27000

Answer & Explanation Answer: B) 25000

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

22 3127

Q:

What is the value of $\sqrt{729} + \sqrt{72.9} + \sqrt{7.29}$

A) 30.5	B) 32.33
C) 35.6	D) 38.23

Answer & Explanation Answer: D) 38.23

Explanation:

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Filed Under: Square Roots and Cube Roots

8 3126

Q:

A drum contains 80 litres of ethanol. 20 litres of this liquid is removed and replaced with water. 20 litres of this mixture is again removed and replaced with water. How much water (in litres) is present in this drum now?

A) 45	B) 40
C) 35	D) 44

Answer & Explanation Answer: C) 35

Explanation:

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

0 3123

Q:

25 divided by 7

A) 3.571	B) 35.71
C) 0.351	D) 0.0357

Answer & Explanation Answer: A) 3.571

Explanation:

Here we have 25 divided by 7.

25 will not go directly in 7

Hence, we get the result in decimals.

25/7 = 3.571.

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Filed Under: Numbers
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4 3120

Q:

Find the compound amount if $1200 is deposited at 8% interest for 11 years if interest is compounded continuously

A) 1456	B) 1456
C) 1693.08	D) 1890

Answer & Explanation Answer: C) 1693.08

Explanation:

M=Pe^yr

2893.08

I=M-P

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
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0 3117

Q:

The ratio of the members of blue to red balls in abag is constant. When there were 44 red balls, the number of blue balls was 36. If the number of blue balls is 54, how many red balls will be in the bag?

A) 68	B) 32
C) 64	D) 66

Quantitative Aptitude - Arithmetic Ability Questions

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