6500+ Quantitative Aptitude Questions and Answers With Explanation

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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Exam Prep: Bank Exams

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Q:

What is the equation of line whose slope is -1/2 and passes through the intersection of the lines x - y = -1 and 3x - 2y = 0?

A) x + 2y = 8	B) 3x + y = 7
C) x + 2y = -8	D) 3x + y = -7

Answer & Explanation Answer: A) x + 2y = 8

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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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Exam Prep: Bank Exams

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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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Exam Prep: AIEEE , Bank Exams , CAT

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Q:

Compound interest on a certain sum for 2 years at the rate of 11% per annum is Rs 1160.5. What will be the simple interest (in Rs) for the same

amount at the same rate of interest for 2 years?

A) 9000	B) 1000
C) 1100	D) 1050

Answer & Explanation Answer: C) 1100

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

If A is equal to 20% of B and B is equal to 25% of C; then what percent of C is equal to A?

A) 10	B) 15
C) 5	D) 20

Answer & Explanation Answer: C) 5

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Filed Under: Percentage
Exam Prep: Bank Exams

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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

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

The sum of a fraction and 7 times its reciprocal is 11/2. What is the fraction?

A) 7/2	B) 2/7
C) 3/4	D) 4/3

Quantitative Aptitude - Arithmetic Ability Questions

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