Average of first 12 natural numbers is MCQ with Answer and Explanation

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Average of first 12 natural numbers is

A. 6

B. 7

C. 6.5

D. 5.5

Answer: Option C

Solution (By JKSSB Mock Tests)

13/2=6.5.

This question belongs to: Maths Average

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Question #1

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The average of 5 numbers is 24. If one number is excluded, the average of the remaining 4 numbers becomes 20. What is the excluded number?

A. 44

B. 48

C. 36

D. 40

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Correct Answer: Option D

Explanation:
Total of 5 numbers = 5×24 = 120. Total of remaining 4 numbers = 4×20 = 80. Excluded number = 120−80 = 40.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 25. If each increased by 3, new average?

A. 27

B. 26

C. 25

D. 28

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Correct Answer: Option D

Explanation:
New average =25+3=28.

This question belongs to: Maths Average

Question #3

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Average of 40 numbers 55. If 10 numbers average 65, average of remaining 30?

A. 52

B. 53

C. 50

D. 51.67

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Correct Answer: Option D

Explanation:
Total=2200. 10=650. Remaining=1550/30≈51.67.

This question belongs to: Maths Average

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