Question

Mean of the five number is 30. If one number is exculed their mean becomes 28. Exculed number is:

Answer 1

Answer:

38

Step-by-step explanation:

mean=30

$\frac{sum of 5 observations}{5} =30\\sum of 5 observations = 30*5\\sum of 5 observation=150\\new mean=28$

sum of 4 observations=28×4

=112

sum of 5  observations-sum of 4 observations=excluded number

excluded number=38