6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 is :

A) 49/7	B) 19/7
C) 50/7	D) 18/7

Answer & Explanation Answer: D) 18/7

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

6 1848

Q:

A boy running at 10/9 th of his actual speed covers 39 km in 2 hours 20 minutes and 24 seconds. Find the actual speed of the boy (approx.)

A) 15 kmph	B) 50 kmph
C) 39 kmph	D) 150 kmph

Answer & Explanation Answer: A) 15 kmph

Explanation:

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Filed Under: Time and Distance
Exam Prep: Bank Exams

1 1848

Q:

If x + y = 12 and $x^{2} + y^{2} = 94$ , then xy is

A) 25	B) 50
C) 144	D) 238

Answer & Explanation Answer: A) 25

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1848

Q:

Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?

A) 8	B) 9
C) 7	D) 6

Answer & Explanation Answer: B) 9

Explanation:

Number of students who took only Mathematics n(m) = 29
Number of students who took only biology n(b) = 32
Total number of students n(t) = 60
Total number of students of both mathematics and biology n(m b) = 60 - 8 = 52
Total number of students who took both = 32 + 29 - 52 = 9

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

0 1848

Q:

In the following question, select the odd letter from the given alternatives.

A) B	B) N
C) P	D) W

Answer & Explanation Answer: D) W

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

If $x = \sqrt{3} + \frac{1}{\sqrt{3}}$ , then the value of $(x - \frac{\sqrt{126}}{\sqrt{42}}) (x - \frac{1}{x - \frac{2 \sqrt{3}}{3}})$ is

A) √3/6	B) 2√3/6
C) 5/6	D) 2/3

Answer & Explanation Answer: C) 5/6

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The selling price of an item inclusive of a 10% profit was Rs.440. What would be the percentage loss if the item was sold for Rs. 370?

A) 7.5	B) 8
C) 6.25	D) 8.4

Answer & Explanation Answer: A) 7.5

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

What is the rate of interest if simple interest earned on a certain sum for the 3rd year is Rs 1,750 and compound interest earned for 2 years is Rs 3622.5?

A) 8	B) 9
C) 10	D) 7

Quantitative Aptitude - Arithmetic Ability Questions

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