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 Classic counterfeit coin problem (Posted on 2005-06-04)
In the famous "The Odd Coin" problem you are given twelve coins, exactly one of which is lighter or heavier than the other coins. You are to determine the counterfeit coin, and whether it is lighter or heavier than the other coins, in just three weighings with a balance.

Can you solve this problem with the additional restriction that you must decide what coins go on each pan for all three weighings before any weighing takes place?

 See The Solution Submitted by McWorter Rating: 3.7500 (4 votes)

 Subject Author Date re(6): Another way to answer it McWorter 2005-06-10 22:10:56 re(5): Another way to answer it Ken Haley 2005-06-10 04:39:39 re(4): Another way to answer it McWorter 2005-06-07 15:45:50 re(3): Another way to answer it Ken Haley 2005-06-07 06:08:50 re(2): Another way to answer it McWorter 2005-06-05 22:35:18 re: Another way to answer it Charlie 2005-06-05 17:43:52 Another way to answer it Jennifer 2005-06-05 11:36:10 re(2): Answer Ken Haley 2005-06-04 23:07:43 re: Answer Tristan 2005-06-04 23:04:11 re(2): No Subject TomM 2005-06-04 16:49:51 re: No Subject Sam 2005-06-04 16:29:40 No Subject jasper 2005-06-04 16:08:16 Answer Ken Haley 2005-06-04 16:01:20

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