6500+ Quantitative Aptitude Questions and Answers With Explanation

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

0 1623

Q:

If two marbles are picked at random, what is the probability that either both are red or both are green?

A) 5/7	B) 5/14
C) 1/7	D) 1/14

Answer & Explanation Answer: C) 1/7

Explanation:

Required probability = $\frac{(10 + 3)}{91} = \frac{13}{91} = \frac{1}{7}$

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE
Job Role: Bank Clerk , Bank PO

3 1623

Q:

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

A) 21.30	B) 21.40
C) 21.20	D) 21.50

Answer & Explanation Answer: A) 21.30

Explanation:

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

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Q:

(45.004% of 1439.97 –15.99% of 2249.97) ÷ 35.98 = ?

A) 7	B) 5
C) 3	D) 8

Answer & Explanation Answer: D) 8

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
Job Role: Bank PO , Bank Clerk

0 1622

Q:

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

A) 32 days	B) 28 days
C) 29 days	D) 30 days

Answer & Explanation Answer: D) 30 days

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

0 1622

Q:

A sum of Rs 1200 amounts to Rs 1740 in 3 years at simple interest. If rate of interest is increased by 3%, then what will be the new amount (in Rs)?

A) 1848	B) 1946
C) 1812	D) 1924

Answer & Explanation Answer: A) 1848

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams , GATE
Job Role: Bank Clerk , Bank PO

2 1622

Q:

Which one is the largest among the fractions (5/113), (7/120), (13/145) and (17/160)?

A) 5/113	B) 7/120
C) 13/145	D) 17/160

Answer & Explanation Answer: D) 17/160

Explanation:

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Filed Under: Numbers
Exam Prep: Bank Exams

1 1622

Q:

Δ DEF is right angled at E. If m ∠D = 30°. What is the length (in cm) of DE, if EF = 2√3 cm?

A) 3	B) 4
C) 6	D) 2

Quantitative Aptitude - Arithmetic Ability Questions

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