Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83 SMI; site ur-laser.uucp Path: utzoo!linus!philabs!cmcl2!seismo!rochester!ur-laser!james From: james@ur-laser.uucp (James Chavin) Newsgroups: net.jokes Subject: a logic brainteaser Message-ID: <220@ur-laser.uucp> Date: Mon, 20-Aug-84 15:22:37 EDT Article-I.D.: ur-laser.220 Posted: Mon Aug 20 15:22:37 1984 Date-Received: Wed, 22-Aug-84 02:49:59 EDT Organization: Lab for Laser Energetics, Univ. of Rochester Lines: 30 You are Dorothy on the way to the Wonderful Wizard of Oz. One day, while gaily skipping along the yellow brick road, you come to fork, one path leading north and another one west. Unfortunately, you don't know which path leads to Oz and which path leads to /dev/null. Between the fork lies a quaint old cottage. In this cottage there live two identical witches. One witch always tells the truth while the other witch never tells the truth. Both witches know the way to Oz, and have graciously granted you one question to ask one of them. You must consider your choice of question carefully, for there must be no doubt as to the correct way to Oz. A question such as 'Which way to Oz?' is obviously useless, as you will not know whether you asked the truthful or the deceitful witch. The problem is not to guess the correct way, but to ask the correct question so that regardless of which hag is asked, the same path would be indicated. Mail your questions to James Chavin {allegra,seismo} !rochester!ur-laser!james Gary Krakower We will reply promptly, and post the correct question to the net Monday, August 27. Have fun!!!!!!!!!!!!! -------------------------------------------------------------------------------- X-rays let you see your soul --------------------------------------------------------------------------------