New slant on the liar riddle

Sean · Guest

You've all heard about the twins, one who lies and the other who always tells the truth. Well suppose they are standing at a fork in the road and one road leads to town while the other leads to certain death. You've got to find out the way to town but the liar's main objective is to send you the wrong way. ie He will tell you any answer (truth or lie) if he thinks it'll send you on the wrong road. The truthful twin will remain truthful at all times. Now what do you do?

tricky · Guest

do you even know the answer

tricky · Guest

do you even know the answer

tricky · Guest

do you even know the answer

tricky · Guest

do you even know the answer

tricky · Guest

go the other way.not the fork in the road way.

Aussie.Sex · New Member Joined: 15 Apr 2008 Posts: 24

I dont think its possible.

RU14ME2C · New Member Joined: 17 Apr 2008 Posts: 4

Ask both twins separately how the other twin would answer the question "Is this the way to certain death?"

kristileigh3000 · Posted: Wed Jul 23, 2008 5:57 pm Post subject:

but you can only ask one question, so you can't ask each one a question seperately. It's simple tho: Ask one of them a question you already know the answer to, like "what's 2+2?" And the one that always tells the truth will say 4 and the one that always lies with say something else. Then you'll know which is which Very Happy

Vertabladehot2m · Guy Who Comes A Lot Joined: 10 Nov 2006 Posts: 192

no because if the standards of this riddle are just like the other version except for the extra problem, than u can only ask one question. but this guy didnt really explain it so i dont really no for sure.

darkarden · New Member Joined: 12 Aug 2008 Posts: 1

[quote="kristileigh3000"]but you can only ask one question, so you can't ask each one a question seperately. It's simple tho: Ask one of them a question you already know the answer to, like "what's 2+2?" And the one that always tells the truth will say 4 and the one that always lies with say something else. Then you'll know which is which Very Happy

[/quote]

no, according to you the 'liar's perogative is to give you whatever answer will lead you down the wrong road, so telling you that the answer to 2+2=4 or that 2+2=(wrong answer here) wont achieve that goal, so he will probably just say 4 to keep you confused.

Besides, even if asking this question told you which was the liar and which was the truth-teller, you still have no idea which road leads where. The problem is impossible simply because, if the liar simply duplicated everything that the truth-teller said, then you could never possible figure out which road was correct.