Find the number of ways that Magnus can give out $12$ identical stickers to $2$ of his friends, if every friend gets at least one sticker.
FreindA FriendB
1 11
2 10
3 9
.
11 1 11 WAYS
Friend 1 Friend 2
4 8
5 7
6 6
7 5
8 4
9 3
10 2
11 1
+250 
