You are on an island populated by two kinds of folks, ones who always tell the truth, and ones who always lie. They always travel in pairs, the truthful one and lier. Otherwise, you can't distinguish them. You come to a fork in the road. One leads to your hotel, one leads somewhere else, and you don't know which road is which. There is a pair of the inhabitants standing by the road. You wish to find out how to get back to your hotel.
What one question can you ask that will tell you which choice to make ?
Caution: please, don't hurt your brain.
I thought about it for days now. |
