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Mean

The arithmeti...

Question

The arithmetic mean of 5 numbers is 27. lf one of the number is excluded the mean of the remaining number is 25. Find the excluded number.

A

27

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B

25

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C

30

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D

35

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Solution

The correct option is D 35
Sum of 5 numbers =27 $\times$ 5 =135
When one of the numbers is excluded.
Sum of remaining 4 numbers = 4 $\times$ 25 = 100
Excluded number = 135 -100 = 35.

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