If each of A, B, C stands for a nonzero digit in the following addition, then find the three-digit number ABC.
A C B
B A C
B C A
C A B
+ C B A
___________
1 2 2 3
If each of A, B, C stands for a nonzero digit in the following addition, then find the three-digit number ABC.
A C B
B A C
B C A
C A B
+ C B A
___________
1 2 2 3
What is summation?