12 bolt puzzle HELP!

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Article #2671

#2671

From: Capt Scott (retired)
Date: Tue, 12 Jan 1993 17:27

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I was told a puzzle recently and it is driving me spare.
I have a feeling it is probably  standard puzzle so if anyone
can help me ....

This is it:-
	You have 12 bolts, totally identical except 1 is either 
lighter or heavier. Using a balance-scale 3 times find the 
Dud.

Any help appreciated
Scott

-- 
-----------------------------------------------------------------
 Scott Gilhooly             |The only thing more dangerous than |
 Glasgow University         |a programmer with a screwdriver is |
 gilhoosg@dcs.gla.ac.uk     |a user with an idea                |

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Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!warwick!doc.ic.ac.uk!uknet!glasgow!gilhoosg
From: gilhoosg@dcs.glasgow.ac.uk (Capt Scott (retired))
Newsgroups: rec.puzzles
Subject: 12 bolt puzzle HELP!
Message-ID: <C0r4I6.2sy@dcs.glasgow.ac.uk>
Date: 12 Jan 93 17:27:41 GMT
Organization: Glasgow University Computing Science Dept.
Lines: 17