There are 12 balls, eleven of equal weight and one that is heavier or lighter than the others. You are given a balance scale. How would you find the off-weight ball in just three weighings?

help???????

There are 12 balls, eleven of equal weight and one that is heavier or lighter than the others. You are given a balance scale. How would you find the off-weight ball in just three weighings?

help???????

help???????

- stapel_eliz
**Posts:**1686**Joined:**Mon Dec 08, 2008 4:22 pm-
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The Math Forum has a great archive of exactly this sort of exercise. **Their solution** involves coins, but the process is exactly the same for balls or any other objects.