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Question

The mean of 5 numbers is 18. If one number is excluded, their mean is 16. The excluded number is:


A

34

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B

16

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C

33

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D

26

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Solution

The correct option is D

26


Mean of 5 numbers=18
Total=18×5=90
By excluding one number, the mean of remaining 5-1=4 numbers =16
Total=16×4=64
Excluded number = 90 - 64 = 26


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