Average of 10 numbers 1880. If average of 6 is 1875, average of remaining 4? MCQ with Answer and Explanation

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

A. 1887.5

B. 1890

C. 1885

D. 1886

Answer: Option A

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Average

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Question #1

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The average of 5 numbers is 32. If one number is excluded, the average becomes 30. Find the excluded number.

A. 40

B. 36

C. 38

D. 42

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Correct Answer: Option A

Explanation:
Sum of 5 =160. Sum of 4=4×30=120. Excluded=160-120=40.

This question belongs to: Maths Average

Question #2

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The average of 10 numbers is 21. If one number is 30, find the average of the remaining 9.

A. 20.5

B. 19

C. 19.5

D. 20

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Correct Answer: Option D

Explanation:
Sum=10×21=210. Remaining sum=210-30=180. Avg=180/9=20.

This question belongs to: Maths Average

Question #3

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Average of 10 numbers 1230. If average of 6 is 1225, average of remaining 4?

A. 1235

B. 1240

C. 1237.5

D. 1236

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Correct Answer: Option C

Explanation:
Sum10=12300. Sum6=7350. Remaining=4950. Average=1237.5.

This question belongs to: Maths Average

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