Question

If the mean of a set of numbers is 12, what must the last one be if the first

ones are 7, 16, 11, 12, and 10? *

Answer 1

16

Explanation:

The mean is all the numbers i the set added together, then divided by the number of terms. For example:

1 2 3

1+2+3

6

6/3=2

2 would be the mean.

So:

`7+16+11+12+10+16\\23+11+12+10+16\\34+12+10+16\\46+10+16\\56+16\\72\\\\(72)/(6)=12`

16 is the missing value of the set if the mean is 12.

Finito.

Answer 2

16

Explanation:

12 * 6 is 72

72 - the numbers given = 16