Tuesday, February 17, 2009

Puzzle: Truth City

Problem: You are on your way to Truth City, where the inhabitants always tell the truth. At one point you reach a fork in the road, with one branch leading to Truth City and the other leading to Lies City, where the citizens are all liars. The road signs at the junction are, as you can imagine, confusing, but there is a man standing there from whom you can ask directions.

The only problem is, you don’t know where he is from – the city where everyone always gives the right answer or the city where everyone lies. If you have time to ask him only one question, what question will ensure that you will be headed in the right direction ?

1 comment:

Saurabh Joshi said...

If I were to ask you whether left side path leads to the truth city would you say "yes"?

if answer is yes --> go to left
otherwise --> go to right