Question

The mean id 10 numbers is55.If one number is excluded, their mean becomes 50. The excluded number is

Answer 1

Hey mate !!!


here is your answer !!!

the mean of 10 numbers is 55

55 = sum of observation / total number of observation


55 = sum of observation / 10


=> sum of observation = 550



one number is excluded

let the exclude mean be x


=>


mean of 10 number - mean of X / 9 = 50


=> 550 - x = 450


X = 100 .


hence the excluded mean = 100 .


hope it helps you dear !!
$thanks$

Answer 2

here is u r answer
◆◆◆◆◆◆◆
given.
mean of 10 is 55
55=sum of onder/10
total observation=550
let x
m of 10 number_ m of x/9
= 50
550 _ x= 450
x= 100
it's u r answer.