Question

the mean of 5 numbers is 20 if one of the number is excluded mean of the remaining number becomes 23 find the excluded number please give the answer​. please give answer i mark you as brainlist please​

Answer 1

Answer:

Mean of 5 numbers = 20

Sum of 5 numbers = 20×5 = 100

if one is excluded, mean of 4 numbers = 23

Sum of 4 numbers = 23×4= 92

The number excluded= 100 - 92 = 8

Answer 2

Given,

The mean of 5 numbers = 20

So, the total sum of the numbers = 20 x 5 = 100

After excluding one number,

The mean of the remaining 4 numbers = 23

So, the total sum of these numbers = 23 x 4 = 92

Hence,

The excluded number is = 100 – 92 = 8.