6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 18% per annum is Rs 81. The sum is ____.

A) Rs 2500	B) Rs 5000
C) Rs 10000	D) Rs 7500

Answer & Explanation Answer: A) Rs 2500

Explanation:

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Filed Under: Compound Interest
Exam Prep: Bank Exams

6 1339

Q:

199994 x 200006 = ?

A) 39999799964	B) 39999999864
C) 39999999954	D) 39999999964

Answer & Explanation Answer: D) 39999999964

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1339

Q:

If $\frac{a + b}{\sqrt{ab}} = \frac{2}{1}$ , then the value of (a-b) is

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

Answer & Explanation Answer: B) 0

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1339

Q:

The diameters of two cylinders are in the ratio 3:2 and their volumes are equal. The ratio of their heights is

A) 2:3	B) 3:2
C) 9:4	D) 4:9

Answer & Explanation Answer: D) 4:9

Explanation:

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

2 1339

Q:

A solid sphere of radius 6 cm is melted and re-casted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, find the uniform thickness of the cylinder ?

A) 3 cm	B) 1.5 cm
C) 1 cm	D) 2.5 cm

Answer & Explanation Answer: C) 1 cm

Explanation:

Let, inner radius of cylinder be ‘x’ cm.
4/3 π(6)3 = π × 32 (52 − x2)

or, (4 × 6 × 6 × 6) / (3 × 32) = 25 − x2 or, x2 = 25 − 9
or, x = 4 cm
Hence, thickness = 5 – 4 = 1 cm.

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

0 1338

Q:

In an examination, 52% candidates failed in English and 42% failed in Mathematics. If 17% failed in both the subjects, then what percent passed in both the subjects?

A) 77	B) 58
C) 48	D) 23

Answer & Explanation Answer: D) 23

Explanation:

No of students failed in English only = 52 –17 = 35

No of students failed in maths only = 42 –17 = 25

Total no of failed students in either of the subjects = 35+17+25 = 77

No of passed student in both subjects = 100 –77 = 23

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

0 1338

Q:

Simple interest on a certain sum of money for 3 years at 14% per annum is half the compound interest on Rs. 10000 for 2 years at 10% per annum. The sum placed on simple interest is

A) Rs 5000	B) Rs 1250
C) Rs 2000	D) Rs 2500

Answer & Explanation Answer: D) Rs 2500

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

2 1338

Q:

The price of an article is discounted by 25%, to restore to its original value, the new price must be increased by

A) 57 percent	B) 36.31 percent
C) 71.25 percent	D) 33.33 percent

Quantitative Aptitude - Arithmetic Ability Questions

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