0
Wiki User
1 + 20
2 + 19
3 + 18
4 + 17
5 + 16
7 + 14
8 + 13
9 + 12
10 + 11
All numbers that add to make 21 :)
Anonymous β
7+16
57
51
-17
41
111
121
21
20 and 21
7 & 3
The numbers are: -1 and -20
-3367
-21 and -5