Suppose that A , B, and C are non-zero distinct digits less than 6, and suppose we have AB_6 + C_6 = C0_6. Find the smallest possible value of A + B + C.
A = 1, B = 4, C = 2 All in base 6
So that: AB_6 + C_6 =C0_6 =14_6 + 2_6 = 20_6
A + B + C = 1 + 4 + 2 =11_6