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One or Two Fake Coins (Posted on 2005-09-13) Difficulty: 4 of 5
In a group of ten coins there are either one or two fake coins and the rest are real. The fakes can be distinguished from the real coins only by weight. If there are two fake coins they will be equal weights.

Find a strategy to identify the fake coin or coins which uses only a balance scale no more than five times.

No Solution Yet Submitted by Brian Smith    
Rating: 3.6667 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: wondering Comment 4 of 4 |
(In reply to wondering by Vernon Lewis)

The answer does cover both cases.


  Posted by Marshall on 2007-07-20 06:59:09
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