Average of 10 numbers 780. If average of 6 is 775, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 780. If average of 6 is 775, average of remaining 4?

A. 785

B. 786

C. 787.5

D. 790

Answer: Option C

Solution (By JKExamLibrary)

Sum10=7800. Sum6=4650. Remaining=3150. Average=787.5.

This question belongs to: Maths Average

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Average of multiples of 8 from 8 to 64 is

A. 40

B. 30

C. 32

D. 36

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Correct Answer: Option D

Explanation:
(8+64)/2=36.

This question belongs to: Maths Average

Question #2 Report Error

The average of 1080,1440,1800 is

A. 1430

B. 1450

C. 1440

D. 1435

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Correct Answer: Option C

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4320/3=1440.

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Question #3 Report Error

The average of 15,25,35,45,55 is

A. 30

B. 36

C. 40

D. 35

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Correct Answer: Option D

Explanation:
Sum=175. Average=35.

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