Question

18.
The mean of five number is 30. If one number is excluded their mean
becomes 28. The excluded number is:

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Answer 1

$\huge\underline\pink{Required\:Answer}$

Answer 2

Answer:

38

Step-by-step explanation:

mean of five number=30

it means sum of total numbers= 30×5=150

after excluding one number, mean=28

it means sum of the 4 numbers= 28×4=112

so the excluded number is 150-112=38.