So it's like one of those puzzles involving people in one village who only tell the truth and people in another village who only lie. I'm too mush-brained at the moment to figure out the answer but I'm sure it's out there.
The premise is that you come to a fork in the road and standing there is one person from each of the villages (the only lying and only truth-telling). You need to know which is the correct fork to take (I guess one leads to Oz and the other to a live volcano or something).
What question(s) do you need to ask of which villager to get the correct answer?
The answer is that you ask this question (only one) of EITHER of the villagers: "If I ask the other villager which fork to take, what will he say?" and then no matter what that villager answers, take the OTHER fork.
