Aptitude and Reasoning Questions

Q:

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 1603
Q:

A man travelled a distance of 61 km. in 9 hours , partly by walking at speed of 4 km / hr and partly on bicycle at speed of 9 km / hr. The distance covered by walking is

A) 16 Km B) 12 Km
C) 15 Km D) 17 Km
 
Answer & Explanation Answer: A) 16 Km

Explanation:
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Filed Under: Time and Distance
Exam Prep: Bank Exams

2 1602
Q:

What number should be added to each of the numbers 94, 24, 100 and 26, so that the resulting numbers are in continued proportion?

A) 10 B) 11
C) 9 D) 8
 
Answer & Explanation Answer: B) 11

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

5 1602
Q:

In a certain code language, “FAINT” is written as “DYGLR”. How is “METRO” written in that code language?

 

A) RPJNO   B) JKNPQ  
C) NPQRV   D) KCRPM
 
Answer & Explanation Answer: D) KCRPM

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

7 1601
Q:

If R = 97 and S = 155.2, then S is how much percentage more than R?

A) 60 B) 37.2
C) 58.4 D) 48
 
Answer & Explanation Answer: A) 60

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Filed Under: Percentage
Exam Prep: Bank Exams

6 1601
Q:

Deepanshu lent Rs. 8400 to Jaipal for 15 years and Rs. 5100 to Kareem for 14 years on simple interest at the same rate of interest and received Rs. 17766 in all from both of them as interest. The rate of interest per annum is

A) 9.5 percent B) 10 percent
C) 10.5 percent D) 9 percent
 
Answer & Explanation Answer: D) 9 percent

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Filed Under: Simple Interest
Exam Prep: Bank Exams

3 1601
Q:

If the selling price is Rs 2125 after getting a discount of 15% what was the marked price?

A) Rs 2443.75 B) Rs 1806.25
C) Rs 1847 D) Rs 2500
 
Answer & Explanation Answer: D) Rs 2500

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Filed Under: Percentage
Exam Prep: Bank Exams

4 1601
Q:

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

A) 7.5% B) 7%
C) 6% D) 6.5%
 
Answer & Explanation Answer: B) 7%

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Filed Under: Compound Interest
Exam Prep: Bank Exams

2 1601