Suppose the numbers were
4, 6, 8, 10, 12
Which number could you remove to get a mean of 7?
The mean of five numbers is 8. If one of the numbers is removed from the list, the mean becomes 7. what is the number that was removed.
I could not figure this out.
4 answers
"The mean of five numbers is 8"
would imply that the total of the 5 numbers had to be 40
So now you have only 4 numbers with a mean of 7
which implies that the new total is 28
What is 40 - 28 ?
would imply that the total of the 5 numbers had to be 40
So now you have only 4 numbers with a mean of 7
which implies that the new total is 28
What is 40 - 28 ?
thanks for the explaning it. I understand that much better
DAB SON !