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

Step-by-step explanation:

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

Answer:

let the 5 no be x1 + x2+ x3+ x4 + x5/5 = 20

x1 + x2 + x3 + x4+ x5= 100

x1+x2+x3+x4/4= 23

x1+x2+x3+x4= 92

92+x5/2 =

x5/2=-92

x5 = -92/2

x5= -46