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Sorting Coins (Posted on 2004-01-18) Difficulty: 3 of 5
You have 12 coins. They are completely identical except six of them weigh 24g and the other six weigh 25g. You have only a balance scale to sort them out. What is the minimum number of weighings which guarantees all the coins to be sorted?

See The Solution Submitted by Brian Smith    
Rating: 3.3333 (3 votes)

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  Subject Author Date
answerK Sengupta2007-12-21 12:21:19
Good problem but Oldjon&lilet2004-04-16 04:27:41
re: will this workBrian Wainscott2004-01-22 15:40:30
will this workMIKE INCE2004-01-21 19:50:35
Solutionre(2): Simple approachBrian Wainscott2004-01-20 13:08:14
There is a solution in . . . .Brian Smith2004-01-20 12:15:45
re: Simple approachJohn2004-01-19 17:52:38
Simple approachBrian Wainscott2004-01-19 13:52:15
re: An alternative methodPenny2004-01-18 23:22:54
SolutionAn alternative methodPenny2004-01-18 22:37:38
Some Thoughtsworst case & information theoreticCharlie2004-01-18 12:34:11
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