1.

The mean of five numbers is 30. If one number is excluded, their mean becomes 28. The excluded number is

Answer» Mean of the given five numbers= 30
Sum of these five numbers ` = ( 30xx 5) = 150`
mean of the remaining four numbers = 28
Sum of these numbers =` ( 28xx 4) =112`
Excluded number = ( 150 -112) =38.


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