The average of 7 numbers is 41. If each number is multiplied by 2, what is the new average? MCQ with Answer and Explanation

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The average of 7 numbers is 41. If each number is multiplied by 2, what is the new average?

A. 82

B. 41

C. 84

D. 61.5

Answer: Option A

Solution (By JKSSB Mock Tests)

New average =41×2=82.

This question belongs to: Maths Average

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Question #1

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What is the average of the first 9 odd numbers?

A. 8.5

B. 10

C. 9

D. 9.5

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Correct Answer: Option C

Explanation:
Sum of first n odd numbers = n^2 =9^2=81. Average=81/9=9.

This question belongs to: Maths Average

Question #2

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Average of 9 numbers 790. If average of 6 is 785, average of remaining 3?

A. 805

B. 795

C. 800

D. 798

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Correct Answer: Option C

Explanation:
Sum9=7110. Sum6=4710. Remaining=2400. Average=800.

This question belongs to: Maths Average

Question #3

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What is the average of the first 10 odd numbers?

A. 11

B. 9.5

C. 10.5

D. 10

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Correct Answer: Option D

Explanation:
Sum of first 10 odd =10^2=100. Average=100/10=10.

This question belongs to: Maths Average

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