Brain teaser! (1 Viewer)

[OzDigger]

But the point is you don't know which of the men is the truth teller and which is the liar, so your question has to be one which would generate the right answer from both men.

I think the answer is to ask "if I asked the other guy which way leads to my destination, what would he say?"

If you ask the liar, he will tell you the wrong way, because he always lies.

If you ask the truthful guy, he will tell you the wrong way because the other guy always lies.

Then just go the opposite way.

Am I right, Oz?

You are correct Louis

The following is another version, and it may be less confusing than mine considering some of the earlier suggestions.

There is an old riddle about a man walking along until he comes to a fork in the road. One path leads to Heaven and the other to Hell, and there is no way of knowing which is which except by asking at a nearby house. In the house live two identical sisters: one always lies, the other always tells the truth and, not knowing to which sister will answer the door, he is only allowed one question. What must he ask?

The solution to the riddle is to pose the question "What would your sister say if I asked her which road I should take?" By this means a single negation is introduced into the reply, regardless of which sister answers the question; then the opposite path is taken. However this riddle and its solution is set in a simple, invariant world where one person always lies and one always tells the truth. Real life, of course, is not that simple.

 

[eborris]

I still say that you are one of the two guys at the fork in the road, it read you reach a fork in the road and there are two guys there, so you don't count? I think I get it right on a technicality.

 

[OzDigger]

I still say that you are one of the two guys at the fork in the road, it read you reach a fork in the road and there are two guys there, so you don't count? I think I get it right on a technicality.

I think you overlooked this key statement: "The traveller may ask one of the men one question to find his way."

 

[eborris]

Heck, I ask myself questions all the time.