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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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answer Comment 11 of 11 |
The required maximum number of weighings is 8.
  Posted by K Sengupta on 2007-12-21 12:21:19
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