Question

the mean of 8 numbers is 12. the first seven nubers are 13,11,7,8,13,17and 12. what is the eighth numbee​

Answer 1

The eighth number is 15.

13 + 11 + 7 + 8 + 13 + 17 + 12 + 15 = 96
96 divided by 8 = 12

Final answer: 15

Hope this helps :)