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Question -

The mean of five numbers is 27. If one number is excluded, their mean is 25. Find the excluded number.



Answer -

Mean of 5 numbers = 27
Total = 27 x 5 = 135
By excluded one number, then mean of remaining 4 numbers = 25
Total = 4 x 25 = 100
Excluded number = 135 тАУ 100 = 35

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