Average of 10 numbers 1980. If average of 6 is 1975, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 1980. If average of 6 is 1975, average of remaining 4?

A. 1990

B. 1986

C. 1985

D. 1987.5

Answer: Option D

Solution (By JKExamLibrary)

Sum10=19800. Sum6=11850. Remaining=7950. Average=1987.5.

This question belongs to: Maths Average

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Question #1

Average of 16 numbers 25. If 4 numbers average 30, average of remaining 12?

A. 24

B. 22

C. 25

D. 23.33

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Correct Answer: Option D

Explanation:
Sum16=400. Sum4=120. Remaining=280/12≈23.33.

This question belongs to: Maths Average

Question #2

Average of first 50 even numbers is

A. 49

B. 50

C. 51

D. 52

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Correct Answer: Option C

Explanation:
First 50 even: 2 to 100. Average = (2+100)/2 =51.

This question belongs to: Maths Average

Question #3

Average of 12 numbers 570. If average of 8 is 565, average of remaining 4?

A. 580

B. 582

C. 575

D. 578

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Correct Answer: Option A

Explanation:
Sum12=6840. Sum8=4520. Remaining=2320. Average=580.

This question belongs to: Maths Average

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