6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The value of $(\frac{1}{(p - n) (n - q)} + \frac{1}{(n - q) (q - p)} + \frac{1}{(q - p) (p - n)}) i s$

A) 1	B) 0
C) p+q+n	D) 2np+q

Answer & Explanation Answer: B) 0

Explanation:

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Filed Under: Simplification

0 1751

Q:

What is the value of cot 5π/3?

A) 1/√3	B) -1/√3
C) √3	D) -√3

Answer & Explanation Answer: B) -1/√3

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Filed Under: Simplification
Exam Prep: Bank Exams

1 1751

Q:

The average age of 6 members of a family is 20 years. If the age of the servant is included, then the average age increase by 25%. What is the age (in years) of the servant?

A) 30	B) 35
C) 50	D) 55

Answer & Explanation Answer: D) 55

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

5 1750

Q:

Cost price of a pen is 50 Rs. and that of notebook is 140 Rs. If pen is sold at 200% profit, then to purchase 10 such note books how many pens are required to sell if only profit money is used to buy notebooks?

A) 14	B) 18
C) 15	D) 20

Answer & Explanation Answer: A) 14

Explanation:

C.P. of 10 note books ⇒ 140 × 10 = 1400 Rs.
Profit on selling one pen ⇒ 50×200/100 = Rs 100
Number of pen required ⇒ 1400/100 = 14

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

0 1749

Q:

Two numbers whose sum is 84 can not be in the ratio

A) 5:7	B) 13:8
C) 1:3	D) 3:2

Answer & Explanation Answer: D) 3:2

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

2 1747

Q:

If 3x + [1/(5x)] = 7, then what is the value of $5 x / (15 x^{2} + 15 x + 1)$ ?

A) 1/5	B) 1/10
C) 2/5	D) 10

Answer & Explanation Answer: B) 1/10

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

What is the third proportional to 9 and 45?

A) 405	B) 225
C) 5	D) 81

Answer & Explanation Answer: B) 225

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

10 1746

Q:

What is the measure of an interior angle of a regular decagon?

A) 120°	B) 140°
C) 144°	D) 150°

Quantitative Aptitude - Arithmetic Ability Questions

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