Average of 8 numbers 650. If average of 5 is 645, average of remaining 3? MCQ with Answer and Explanation

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Average of 8 numbers 650. If average of 5 is 645, average of remaining 3?

A. 655

B. 660

C. 657

D. 658.33

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum8=5200. Sum5=3225. Remaining=1975. Average≈658.33.

This question belongs to: Maths Average

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Question #1

The average of 7 numbers is 28. If one number is 40, find the average of the remaining 6.

A. 27

B. 25

C. 24

D. 26

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Correct Answer: Option D

Explanation:
Sum=7×28=196. Remaining sum=196-40=156. Average=156/6=26.

This question belongs to: Maths Average

Question #2

Average of 21,42,63 is

A. 42

B. 35

C. 40

D. 45

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Correct Answer: Option A

Explanation:
126/3=42.

This question belongs to: Maths Average

Question #3

Average of 10 numbers 1880. If average of 6 is 1875, average of remaining 4?

A. 1887.5

B. 1885

C. 1890

D. 1886

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Correct Answer: Option A

Explanation:
Sum10=18800. Sum6=11250. Remaining=7550. Average=1887.5.

This question belongs to: Maths Average

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