6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the positive square root of [25 + 4√39]?

A) √13 + 2√3	B) √13 + 3√2
C) √11 + 2√3	D) 11 + 3√2

Answer & Explanation Answer: A) √13 + 2√3

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 120805

Q:

Find the value of

199992 x 200008 = ?

A) 39999799936	B) 39999999836
C) 39999999936	D) 39999999926

Answer & Explanation Answer: C) 39999999936

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 120217

Q:

Find the odd word/letters/number pair from the given alternatives.

(A) 4-16 (B) 8-24 (C) 14-26 (D) 16-36

A) A	B) B
C) C	D) D

Answer & Explanation Answer: C) C

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

3 119241

Q:

$23 - [24 - 25 - (26 - \bar{27 - 28})] = ?$

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

Answer & Explanation Answer: C) -1

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

18 119240

Q:

What is the rate of interest p.c.p.a.?

I. An amount doubles itself in 5 years on simple interest.

II. Difference between the compound interest and the simple interest earned on a certain amount in 2 years is Rs. 400.

III. Simple interest earned per annum is Rs. 2000

A) I only	B) II and III only
C) All I, II and III	D) I only or II and III only

Answer & Explanation Answer: D) I only or II and III only

Explanation:

$I . \frac{P * R * 5}{100} = P \Leftrightarrow R = 20$

$I I . P {(1 + \frac{R}{100})}^{2} - P - \frac{P * R * 2}{100} = 400 = > p R^{2} = 4000000$

$I I I . \frac{P * R * 1}{100} = 2000 = > P R = 200000$

$\frac{P R^{2}}{P R} = \frac{4000000}{200000} \Leftrightarrow R = 20$

Thus I only or (II and III) give answer.

Correct answer is (D)

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

94 118545

Q:

Salaries of Ravi and Sumit are in the ratio 2:3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40:57. What is Sumit's salary?

A) 38000	B) 46800
C) 36700	D) 50000

Answer & Explanation Answer: A) 38000

Explanation:

Let the original salaries of Ravi and Sumit be Rs. 2x and Rs. 3x respectively.
Then,
(2x+4000) / (3x+4000) = 40 / 57
⇒ 57 × (2x + 4000) = 40 × (3x+4000)
⇒ 6x = 68,000
⇒ 3x = 34,000
Sumit's present salary = (3x + 4000) = Rs.(34000 + 4000) = Rs. 38,000

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Filed Under: Ratios and Proportions

441 118277

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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Filed Under: Simplification
Exam Prep: Bank Exams

0 117877

Q:

The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4 ?

A) 76	B) 79
C) 85	D) 87

Answer & Explanation Answer: A) 76

Explanation:

Average = total runs / no.of innings = 32

So, total = Average x no.of innings = 32 x 10 = 320.

Now increase in avg = 4runs. So, new avg = 32+4 = 36runs

Total runs = new avg x new no. of innings = 36 x 11 = 396

Runs made in the 11th inning = 396 - 320 = 76

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Filed Under: Average

426 117393

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