Difference between revisions of "Eight weights"
From Math Puzzle Wiki
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 ...') |
m (Fix category (based on reasonable assumption)) |
||
Line 11: | Line 11: | ||
*[[Twelve weights]] | *[[Twelve weights]] | ||
− | [[Category: Optimization]] | + | [[Category: Optimization puzzles]] |
Revision as of 08:26, 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?