Average of first 10 odd numbers is MCQ with Answer and Explanation

Average of first 10 odd numbers is

A. 12

B. 9

C. 11

D. 10

Answer: Option D

Average =10.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 4,8,12,...,36 is

A. 20

B. 24

C. 22

D. 18

Correct Answer: Option A

Explanation:
9 numbers. Average=(4+36)/2=20.

This question belongs to: Maths Average

Question #2 Report Error

The average of 18, 24, 30, 36, 42 is

A. 32

B. 31

C. 30

D. 28

Correct Answer: Option C

Explanation:
Sum=150. Average=30.

This question belongs to: Maths Average

Question #3 Report Error

The average weight of 7 persons is 58 kg. If a person weighing 68 kg joins, what is the new average?

A. 59.5 kg

B. 60 kg

C. 59.25 kg

D. 58.75 kg

Correct Answer: Option C

Explanation:
Sum=7×58=406. New sum=406+68=474. New avg=474/8=59.25.

This question belongs to: Maths Average