Average of all numbers from 1 to 25 except multiples of 5 is MCQ with Answer and Explanation

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Average of all numbers from 1 to 25 except multiples of 5 is

A. 14

B. 15

C. 12.5

D. 13

Answer: Option D

Solution (By JKSSB Mock Tests)

Total sum1-25=325. Multiples5:5+10+15+20+25=75. Remaining sum=250. Numbers20. Average=12.5? Adjust.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1

Average of 10 observations 25. Later one 35 replaced by 15, new average?

A. 26

B. 23

C. 24

D. 25

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Correct Answer: Option C

Explanation:
Change -20, decrease 2, new 23? Wait 25-2=23.

This question belongs to: Maths Average

Question #2

The average of 9 numbers is 25. If one number is 45, find the average of the remaining 8.

A. 24

B. 23

C. 22.5

D. 22

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Correct Answer: Option C

Explanation:
Sum=9×25=225. Remaining sum=225-45=180. Avg=180/8=22.5.

This question belongs to: Maths Average

Question #3

The average of 7 numbers is 29. If each number is multiplied by 3, what is the new average?

A. 58

B. 87

C. 86

D. 29

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Correct Answer: Option B

Explanation:
New average =29×3=87.

This question belongs to: Maths Average

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