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From: halle@hou2b.UUCP (J.HALLE)
Newsgroups: net.puzzle
Subject: Re: a good interview question (manhole covers)
Message-ID: <441@hou2b.UUCP>
Date: Thu, 14-Mar-85 08:57:03 EST
Article-I.D.: hou2b.441
Posted: Thu Mar 14 08:57:03 1985
Date-Received: Fri, 15-Mar-85 01:34:44 EST
References: <1300@ut-sally.UUCP>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 2

There is a shape other than a circle which would prevent the manhole
cover from falling through.  What is it?