The average of 8 numbers is 27. If each number is decreased by 4, what is the new average? MCQ with Answer and Explanation

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The average of 8 numbers is 27. If each number is decreased by 4, what is the new average?

A. 31

B. 19

C. 23

D. 27

Answer: Option C

Solution (By JKSSB Mock Tests)

New average =27-4=23.

This question belongs to: Maths Average

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Question #1

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Average of 8 numbers 2250. If average of 5 is 2245, average of remaining 3?

A. 2255

B. 2258.33

C. 2260

D. 2257

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Correct Answer: Option B

Explanation:
Sum8=18000. Sum5=11225. Remaining=6775. Average≈2258.33.

This question belongs to: Maths Average

Question #2

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Average of 9 numbers 2790. If average of 6 is 2785, average of remaining 3?

A. 2798

B. 2800

C. 2795

D. 2805

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Correct Answer: Option B

Explanation:
Sum9=25110. Sum6=16710. Remaining=8400. Average=2800.

This question belongs to: Maths Average

Question #3

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The average of squares of first 4 natural numbers is

A. 7.5

B. 9

C. 8.5

D. 6.5

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Correct Answer: Option A

Explanation:
(1+4+9+16)/4=30/4=7.5.

This question belongs to: Maths Average

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