10
Mattyb turned nine in January 1012 OHHH HECK TO THE NO HE WILL BE 10
If you mean: -9-10+8 then their sum is -11
For 8 9 9 9 10 11 11 12: σ=1.3562
The numbers between 8 and 11 are 9 and 10. These numbers fall between 8 and 11 on the number line and are considered consecutive integers. In mathematical terms, they are part of the set {9, 10}.
7 + 8 + 10 + 11 = 36 / 4 = 9
10
10
12+8+10+12+11+9 = 62
11 + 11 + 11 + 10 + 9 + 9 + 9 + 8 + 8 + 8 + 8 + 8 + 8 + 7 + 2 = 127
9
The average is 10.
Since the resident has 11 chances, the vice president has 10 chances, and the treasures has 9 chances, then there are 11 x 10 x 9 = 990 way of choosing them. Or, 11P3 = 11!/(11 - 3)! = 11!/8! = (11 x 10 x 9 x 8!)/8! = 11 x 10 x 9 = 990