Question

mean of 5 numbers is 27 if one number is excluded there mean is 25 find the excluded observation

Answer 1

Mena of 5nos =27

Mean =total of nos÷ no of nos

27=total ÷5

Total =27×5=135

Let d excluded no be x

Thus now there are 4 nos

Mean =25

Total =25×4=100

Thus excluded obsevn

=135-100

=35

Ans is 35

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