6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If $2 x + \frac{1}{4 x} = 1$ , then the value of $x^{2} + \frac{1}{64 x^{2}}$ is

A) 0	B) 1
C) 1/4	D) 2

Answer & Explanation Answer: A) 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In ΔABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

A) 80°	B) 40°
C) 90°	D) 50°

Answer & Explanation Answer: C) 90°

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

In an alloy of German silver the ratio of copper to zinc was 17:7 while that of nickel to zinc was 4 :3. The ratio of copper to zinc to nickel in the alloy was

A) 17 : 21 : 4	B) 51 : 21 : 28
C) 68 : 28 : 21	D) 17 : 28 : 3

Answer & Explanation Answer: B) 51 : 21 : 28

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What is the mean of marks of the students of three divisions of Class X?

A) 63.32	B) 62.62
C) 61.92	D) 64.72

Answer & Explanation Answer: A) 63.32

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

If $4 r = h + \sqrt{r^{2} + h^{2}}$ then r: h = ? (r not equal to 0)

A) 17:8	B) 8:17
C) 8:15	D) 15:8

Answer & Explanation Answer: C) 8:15

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

The sum of the ages of Rohit and Ankit is 78. Rohit's age is twice the age of Ankit. What is the age (in years) of Rohit?

A) 26	B) 52
C) 54	D) 48

Answer & Explanation Answer: B) 52

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

Which of the following quadratic equations has real roots?

A) 4x2 - 7x + 5 = 0	B) 5x2 - 11x + 7 = 0
C) 5x2 - 11x + 8 = 0	D) 2x2 - 7x + 5 = 0

Answer & Explanation Answer: D) 2x2 - 7x + 5 = 0

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

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Q:

The circumference of a circle is 110 cm. Find its radius (in cm).

A) 35	B) 19.5
C) 17.5	D) 39

Quantitative Aptitude - Arithmetic Ability Questions

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