Average of 9 numbers 1640. If average of 6 is 1635, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 1640. If average of 6 is 1635, average of remaining 3?

A. 1650

B. 1645

C. 1648

D. 1655

Answer: Option A

Solution (By JKExamLibrary)

Sum9=14760. Sum6=9810. Remaining=4950. Average=1650.

This question belongs to: Maths Average

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Average of 15 numbers 2010. If average of 9 is 2005, average of remaining 6?

A. 2015

B. 2017.5

C. 2018

D. 2020

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Correct Answer: Option B

Explanation:
Sum15=30150. Sum9=18045. Remaining=12105. Average=2017.5.

This question belongs to: Maths Average

Question #2 Report Error

Find the average of all numbers from 1 to 25 that are divisible by 5.

A. 14.5

B. 14

C. 15

D. 15.5

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Correct Answer: Option C

Explanation:
Numbers: 5,10,15,20,25 sum=75, count=5, avg=15.

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Question #3 Report Error

Average of 10 numbers 2780. If average of 6 is 2775, average of remaining 4?

A. 2790

B. 2786

C. 2785

D. 2787.5

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Correct Answer: Option D

Explanation:
Sum10=27800. Sum6=16650. Remaining=11150. Average=2787.5.

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