Originally posted by bloodyboy
i heard this in 5th grade and now in 9th is still dont know the answer so can you tell me. ok here it is... two guys are in a room wearing the same thing, one lies the other tells the truth. there are also two doors and one leds to heaven and the other to heck. you want to know which leds to heaven. you CAN ONLY ASK ONE question to ask both the people to find out which is heaven or heck, what is the question? and i dont know the answer.
You can ask either person, "If I asked the other person in this room which door leads to Heaven, what would his answer be?"
The liar, knowing the other guy tells the truth, would lie, naming the wrong door...the truth-teller, knowing the other guy always lies, would truthfully tell the other guy's lie, again, naming the wrong door...
In either case, regardless of who you ask, you would know you had been misdirected, and you should then take the OTHER door (assuming you wanted to go to Heaven, that is) from the one that either person told you.
I posted a similar question in these forums (I think I called it "Which Road Should He Take" or something like that).