6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Calculate the value of $\frac{(61681 x 61681 - 31681 x 31681)}{30000}$

A) 93352	B) 94362
C) 93362	D) 95362

Answer & Explanation Answer: C) 93362

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

30 women do half of the total work in 30 days. How many more women will be required to complete the remaining work in 10 days?

A) 45	B) 30
C) 60	D) 80

Answer & Explanation Answer: C) 60

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

A shopkeeper offers 2.5% discount on cash purchases . What cash amount would Rohit pay for a cycle , the marked price of which is Rs.3600 ?

A) Rs. 3490	B) Rs. 3500
C) Rs. 3510	D) Rs. 3520

Answer & Explanation Answer: C) Rs. 3510

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The sum of length, breadth and height of a cuboid is 22 cm and the length of its diagonal is 14 cm.
What is the surface area of the cuboid?

A) 288 sq.cm	B) 216 sq.cm
C) 144 sq.cm	D) Cannot be determined due to insufficient data

Answer & Explanation Answer: A) 288 sq.cm

Explanation:

Let lengths, breadth and height of cuboid be l, b and h respectively

According to question

l+b+h = 22cm......(i)

and

√(l^2+b^2+h^2) = 14cm .....(ii)

Surface area of cuboid = 2(lb+bh+lh)

Squaring eq (i) gives

l^{2} + b^{2} + h^{2}

+ 2(lb+bh+lh) = 484

Substituting l^2+b^2+h^2 from eq (i)

2(lb+bh+lh) = 484 -196 = 288 sq.cm

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

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Q:

The difference between compound interest compoundedevery 6 months and simple interest after 2 years is 248.10.The rate of interest is 10 percent. Find the sum

A) 12000	B) 14000
C) 16000	D) 18000

Answer & Explanation Answer: C) 16000

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Filed Under: Simple Interest

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Q:

The ratio of the cost price and selling price of a bulb is 15 : 18. What is the profit percentage?

A) 16.66	B) 14.28
C) 20	D) 22

Answer & Explanation Answer: C) 20

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams , CAT

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Q:

What is the value of $2 + \sqrt{2 + \sqrt{2 + \sqrt{2}}} . . . . . . .$

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

Answer & Explanation Answer: D) 4

Explanation:

Let 2+√2+√2..... = t
2+√t = t
t - 2 = √t
t = 4

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A boy found the answer for the question "Subtract the sum of 1/4 and 1/5 from unity and express the answer in decimals" as 0.45. The percentage of error in his answer was

A) (100/11) %	B) 50%
C) 10%	D) (200/11)%

Quantitative Aptitude - Arithmetic Ability Questions

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