6500+ Quantitative Aptitude Questions and Answers With Explanation

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 81430

Q:

Simplify the following and find the value of ?

$\frac{1}{3} of ? + \frac{4}{7} of \frac{11}{4} of 539 = 31 % of 2000$

A) 1134	B) 1237
C) 1187	D) 1249

Answer & Explanation Answer: A) 1134

Explanation:

$\frac{1}{3} x ? + \frac{4}{7} x \frac{11}{4} x 539 = \frac{31}{100} x 2000 ? = 378 x 3 ? = 1134$

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Filed Under: Simplification
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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18 81198

Q:

The ratio of the cost price and selling price of a shirt is 32 : 37. What is the profit percentage?

A) 15.63	B) 13.51
C) 17.21	D) 14.44

Answer & Explanation Answer: A) 15.63

Explanation:

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

12 81095

Q:

Find the next number in the number series?

6, 6, 9, 18, 45, ?

A) 87	B) 99.75
C) 115.5	D) 135

Answer & Explanation Answer: D) 135

Explanation:

The given number series is 6, 6, 9, 18, 45, ?

Here the series follows a pattern that,

6

6 x 1 = 6

6 x 1.5 = 9

9 x 2 = 18

18 x 2.5 = 45

45 x 3 = 135

Hence, the next number in the given number series is 135.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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8 81016

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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Filed Under: Simplification
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0 80725

Q:

By selling 45 lemons for Rs 40, a man loses 20%. How many should he sell for Rs 24 to gain 20% in the transaction ?

A) 16	B) 18
C) 20	D) 22

Answer & Explanation Answer: B) 18

Explanation:

Let S.P. of 45 lemons be Rs. x.

Then, 80 : 40 = 120 : x or x = $\frac{40 \times 120}{80}$ = 60

For Rs.60, lemons sold = 45

For Rs.24, lemons sold = $\frac{45}{60} \times 24$ = 18.

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Filed Under: Profit and Loss

787 80641

Q:

A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?

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

Answer & Explanation Answer: C) 3

Explanation:

Area of the park = (60 x 40) = 2400 $m^{2}$

Area of the lawn = 2109 $m^{2}$

Area of the crossroads = (2400 - 2109) = 291 $m^{2}$

Let the width of the road be x metres. Then,

$60 x + 40 x - X^{2} = 291$

$x^{2} - 100 x + 291 = 0$

(x - 97)(x - 3) = 0
x = 3.

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

86 80504

Q:

Find the odd one in the given series ?

5-20-25, 10-40-50, 4-15-24, 25-100-125

A) 4-15-24	B) 5-20-25
C) 10-40-50	D) 25-100-125

Answer & Explanation Answer: A) 4-15-24

Explanation:

In each term second two numbers are multiples of the first number. But in 4-15-24 15 is not multiple of 4.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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5 80502

Quantitative Aptitude - Arithmetic Ability Questions

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