I'm trying to solve a lock 3 code game, Can You Crack The Code. From time to time I find myself presented with a puzzle that has 2 possible solutions, but the game only allows one correct answer. For example, in the puzzle shown below, the possibilities I narrowed down are:
8 1 0 or 8 0 9
and I can't figure out which one is correct.
How do I know which answer to give?