You're trapped in a maze. There is a way out. Path junctions are all 3-way.
If you use the strategy of always taking the path going right, what will happen?
(Note: This problem is deliberarely vague.)
(In reply to
re(3): Depends. by TomM)
If that's the problem we're supposed to solve, then there isn't enough information given to calculate a probability, because we don't know what kinds of distributions there are for placing the, er, victim in the maze, and with what facing. Consider a single-junction maze with two of its paths connected to one another. Basically, it's a line with a loop at the end. If you stick someone in there with an even chance of them being in any "leg" of the junction and a 50/50 chance of facing in either direction, there's a 2/3rds chance that he (to pick a convenient gender) will make it out. If you make the loop really big compared to the exit path, and you base the initial placement distribution on total path length, then there's roughly a 50% chance of making it out.
re(4): Depends.
