6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon?

A) 360	B) 180
C) 90	D) 60

Answer & Explanation Answer: B) 180

Explanation:

Angle traced by the hour hand in 6 hours=(360/12)*6

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Filed Under: Clocks
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190 64431

Q:

In the below word how many words are there in which R and W are at the end positions?

RAINBOW

A) 120	B) 180
C) 210	D) 240

Answer & Explanation Answer: D) 240

Explanation:

When R and W are the first and last letters of all the words then we can arrange them in 5!ways. Similarly When W and R are the first and last letters of the words then the remaining letters can be arrange in 5! ways.

Thus the total number of permutations = 2 x 5! = 2 x 120 = 240

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Filed Under: Permutations and Combinations

4 64065

Q:

What is the value of (sin45 - √3) ?

A) (1-√6)/√2	B) (4-√3)/2√3
C) -1/2√3	D) (2-√3)/2√3

Answer & Explanation Answer: A) (1-√6)/√2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 63950

Q:

If log 27 = 1.431, then the value of log 9 is

A) 0.754	B) 0.854
C) 0.954	D) 0.654

Answer & Explanation Answer: C) 0.954

Explanation:

log 27 = 1.431
log $(3^{3})$ = 1.431
3 log 3 = 1.431
log 3 = 0.477
log 9 = log( $3^{2}$ )= 2 log 3 = (2 x 0.477) = 0.954

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Filed Under: Logarithms
Exam Prep: Bank Exams
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130 63852

Q:

If z = 6 - 2√3, then find the value of ${(\sqrt{z} - \frac{1}{\sqrt{z}})}^{2}$ .

A) 102 - 4634	B) 102 - 4632
C) 102 - 46324	D) 12 - 46324

Answer & Explanation Answer: C) 102 - 46324

Explanation:

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Q:

Solve the following :

196 - 19.6 - 1.96 - 0.196 = ?

A) 173.254	B) 173.234
C) 174.234	D) 174.244

Answer & Explanation Answer: D) 174.244

Explanation:

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0 63657

Q:

Given w = -2, x = 3, y = 0 & z = -1/2. Find the value of $2 (w^{2} + x^{2} + y^{2})$ .

A) 26	B) -26
C) 25	D) 28

Answer & Explanation Answer: A) 26

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

$Cosec (90 - θ)$

A) tan θ	B) cot θ
C) sec θ	D) cos θ

Quantitative Aptitude - Arithmetic Ability Questions

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