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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!js2j
From: js2j@mhuxt.UUCP (sonntag)
Newsgroups: net.puzzle
Subject: Re: puzzle (liars and truth-tellers)  spoiler
Message-ID: <1398@mhuxt.UUCP>
Date: Tue, 11-Feb-86 13:20:46 EST
Article-I.D.: mhuxt.1398
Posted: Tue Feb 11 13:20:46 1986
Date-Received: Wed, 12-Feb-86 08:23:19 EST
References: <1644@hound.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 15

> You have heard about this place. One of the roads goes
> straight to a hospital and the other to a alligator-infested
> swamp. One of these people always tells the truth and the other
> always lies. You can ask either person one question and only
> one question in order to determine which way the hospital is.
> What would be the question and to whom would you ask it?
> How would this question help you to determine which way to go?

       Pick one of the people there at random and ask them:
"If I asked the other guy which road goes to the hospital, what would
he tell me?"
       Both the liar and the truth-teller will tell you the wrong way.
-- 
Jeff Sonntag
ihnp4!mhuxt!js2j