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Quantitative Aptitude - Arithmetic Ability

Quantitative Aptitude - Arithmetic Ability Questions

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Shams invested Rs. 5000 at 10% per annum compound interest. After n years, Shams received Rs. 1655 more. Find the value of n.

A) 3 years	B) 4 years
C) 2 years	D) 1 year

A) 3 years

B) 4 years

C) 2 years

D) 1 year

Answer & Explanation Answer: A) 3 years

Explanation:

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Filed Under: Compound Interest
Exam Prep: Bank Exams

5 1762

If 6/7th of 8/5th of a number is 192, then 3/4th of that number is _____.

A) 105	B) 77
C) 36	D) 80

A) 105

B) 77

C) 36

D) 80

Answer & Explanation Answer: A) 105

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Filed Under: Percentage
Exam Prep: Bank Exams , CAT

1 1762

The average marks of 56 students is shown as 60. It includes a wrong entry of 92 marks instead of 29 marks. The correct average is _____ .

A) 58.875 marks	B) 61.125 marks
C) 63.375 marks	D) 56.625 marks

A) 58.875 marks

B) 61.125 marks

C) 63.375 marks

D) 56.625 marks

Answer & Explanation Answer: A) 58.875 marks

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Filed Under: Average
Exam Prep: Bank Exams

3 1761

The angles of elevation of the top of a tree 220 meters high from two points lie on the same plane are 30° and 45°. What is the distance (in metres) between the two points?

A) 193.22	B) 144.04
C) 176.12	D) 161.05

A) 193.22

B) 144.04

C) 176.12

D) 161.05

Answer & Explanation Answer: D) 161.05

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Filed Under: Height and Distance
Exam Prep: Bank Exams

4 1760

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

A) 90%	B) 60%
C) 80%	D) 70%

A) 90%

B) 60%

C) 80%

D) 70%

Answer & Explanation Answer: C) 80%

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Filed Under: Percentage
Exam Prep: Bank Exams

1 1760

Find the odd one out among the following.

A) ECS	B) RTGS
C) NEFT	D) EMI

A) ECS

B) RTGS

C) NEFT

D) EMI

Answer & Explanation Answer: D) EMI

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 1760

Sum of cubes of first n even natural numbers.

Answer

Proof of Sum of cubes of first n even natural numbers ::

sum_of_cubes_of_first_n_even_natural_numbers1556603651.png image

Hence, in other words, the sum of the first n cubes is the square of the sum of the first n natural numbers.

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Subject: Simplification Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

4 1759

A and B can together complete a task in 18 hours. After 6 hours A leaves. B takes 36 hours to finish rest of the task. How many hours would A have taken to do the task if he worked alone?