6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

HCF of two numbers is 19 and their LCM is 665. If one of the number is 95, find the other.

A) 19	B) 133
C) 190	D) 77

Answer & Explanation Answer: B) 133

Explanation:

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

4 1157

Q:

If $\frac{a + b}{\sqrt{ab}} = \frac{2}{1}$ , then the value of (a-b) is

A) 1	B) 0
C) -1	D) 2

Answer & Explanation Answer: B) 0

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

P and Q can complete a task in 50 and 20 days respectively. In how many days can they complete 70% of the task if they work together?

A) 20 days	B) 20 days
C) 40 days	D) 10 days

Answer & Explanation Answer: D) 10 days

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

1 1157

Q:

Three consecutive integers form the lengths of a right-angled triangle. How many sets of such three consecutive integers is/are possible?

A) Only one	B) Only two
C) Only three	D) Infinitely many

Answer & Explanation Answer: A) Only one

Explanation:

let n-1, n, n+1 be 3 consecutive integers

So

(n+1)^2= n^2+ (n-1)^2

(n+1)^2-(n-1)^2= n^2

4n = n^2

So n = 0 or n = 4

n can’t be 0 as n-1 will be negative then

So 3,4 and 5 is the only triplet formed.

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

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Q:

A sum of Rs. 3000 yields an interest of Rs. 1080 at 12% per annum simple interest in how many years ?

A) 4 Years	B) 3 Years
C) 5 Years	D) 2.5 Years

Answer & Explanation Answer: B) 3 Years

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

2 1157

Q:

Of the three numbers, the average of the first number and the second number is 37 more than the average of second number and third number. What is the difference between the first and the third number?

A) 74	B) 73
C) 37	D) cannot be determined

Answer & Explanation Answer: A) 74

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

If sec (4x - 50°) = cosec(50° - x), Then the value of x is

A) 45°	B) 90°
C) 30°	D) 60°

Answer & Explanation Answer: C) 30°

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If $C + \frac{1}{C} = \sqrt{3}$ , then what is the value of $C^{3} + \frac{1}{C^{3}} = ?$

A) 0	B) 3√3
C) 1/√3	D) 6√3

Quantitative Aptitude - Arithmetic Ability Questions

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