If the average of first 5 multiples of 6 is x, what is x? MCQ with Answer and Explanation

If the average of first 5 multiples of 6 is x, what is x?

A. 15

B. 24

C. 21

D. 18

Answer: Option D

6,12,18,24,30. Sum=90. Average=18.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 3 numbers is 24. If one number is 12 and another is 30, find the third.

A. 18

B. 30

C. 36

D. 24

Correct Answer: Option B

Explanation:
Sum=3×24=72. Third =72-12-30=30.

This question belongs to: Maths Average

Question #2 Report Error

Average of 30 numbers 25. If each number is increased by 10%, new average?

A. 25

B. 30

C. 26

D. 27.5

Correct Answer: Option D

Explanation:
Increased by 10%, average 27.5.

This question belongs to: Maths Average

Question #3 Report Error

Average of 8 numbers 2000. If average of 5 is 1995, average of remaining 3?

A. 2007

B. 2005

C. 2010

D. 2008.33

Correct Answer: Option D

Explanation:
Sum8=16000. Sum5=9975. Remaining=6025. Average≈2008.33.

This question belongs to: Maths Average