The average of numbers from 11 to 30 is MCQ with Answer and Explanation

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The average of numbers from 11 to 30 is

A. 19.5

B. 20

C. 20.5

D. 21

Answer: Option C

Solution (By JKExamLibrary)

(11+30)/2=20.5.

This question belongs to: Maths Average

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Question #1

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The average of 9 numbers is 50. If one number is 70, find the average of the remaining 8.

A. 46.5

B. 47.5

C. 47

D. 48

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Correct Answer: Option B

Explanation:
Sum=9×50=450. Remaining sum=450-70=380. Avg=380/8=47.5.

This question belongs to: Maths Average

Question #2

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Average of 9 numbers 840. If average of 6 is 835, average of remaining 3?

A. 850

B. 845

C. 855

D. 848

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Correct Answer: Option A

Explanation:
Sum9=7560. Sum6=5010. Remaining=2550. Average=850.

This question belongs to: Maths Average

Question #3

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Average of 9 consecutive numbers is 45. Largest?

A. 50

B. 48

C. 49

D. 47

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Correct Answer: Option C

Explanation:
Largest=45+4=49.

This question belongs to: Maths Average

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