Question

the mean of 5 number is 30 if one number is eexcluded their mean becomes 28 find the excluted number

Answer 1

Answer:

Step-by-step explanation:

Mean of x no of obs =

(sum of obs)/(no of obs)

Mean of 5 nos = sum of 5 terms/ 5

sum of 5 terms = 30×5

= 150

Let the excluded no be x.

Then the no of terms becomes 4.

Mean of 4 terms = 150-x / 4

28×4 = 150-x

x = 150- 112

= 38

All the best...

Kindly mark me as the brainliest!!!

Answer 2

Answer:

Step-by-step explanation:

Average of 5 number is 30

Therefore sum of the no. Is 30 × 5 = 150

Average of 4 no is 28

Therefore sum of the no is 28 × 4 = 112

The no excluded is 150-112 = 38 Ans