a + b + c = 10
c = 4
a ≠ b
a + b + 4 = 10
0 + 6 + 4 = 10
1 + 5 + 4 = 10
2 + 4 + 4 = 10
4 + 2 + 4 = 10
5 + 1 + 4 = 10
6 + 0 + 4 = 10
