Eight weights: Difference between revisions
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Oscarlevin (talk | contribs) Created page with 'Here is a puzzle I saw on someones problem of the week site. They had it phrased using batteries. Here is another version. ==Puzzle== You come across eight stones. You know ...' |
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Revision as of 07:26, 21 October 2010
Here is a puzzle I saw on someones problem of the week site. They had it phrased using batteries. Here is another version.
Puzzle
You come across eight stones. You know that 4 of the stones weigh the same, while the other four all weigh different amounts. How many times might you have to use a balance scale before you can know for sure that the next two stones you will weigh will be equal?