Question

The mean of five numbers is 28.if one of the number is excluded,the mean gets reduced by 2 find the excluded number the answer should be 11

Answer 1

Ans is 8

• Mean = Sum / total no.
• So of no.Will be 140
• And now 1 no. Excluded then mean decreased by 2
• It means that 2 is subtracted from all the Left four no .
• so excluded no .Will .
• 4× 2 =8