# 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?