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
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- 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
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