What is the average of cubes of first 3 natural numbers? MCQ with Answer and Explanation

What is the average of cubes of first 3 natural numbers?
A. 36
B. 27
C. 9
D. 12
Answer: Option C
Solution (By JKExamLibrary)
(1+8+27)/3=36/3=12? Wait, adjust: (1+8+27)=36, 36/3=12.

This question belongs to: Maths Average

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Question #1 Report Error
Average of 9 numbers 2690. If average of 6 is 2685, average of remaining 3?
A. 2695
B. 2700
C. 2698
D. 2705

Correct Answer: Option B


Explanation:
Sum9=24210. Sum6=16110. Remaining=8100. Average=2700.

This question belongs to: Maths Average
Question #2 Report Error
The average of 7 numbers is 50. If each number is increased by 5, what is the new average?
A. 60
B. 50
C. 55
D. 45

Correct Answer: Option C


Explanation:
New average =50+5=55.

This question belongs to: Maths Average
Question #3 Report Error
Average of 1365,1820,2275 is
A. 1810
B. 1815
C. 1820
D. 1830

Correct Answer: Option C


Explanation:
5460/3=1820.

This question belongs to: Maths Average