Assuming one ball is heavier than the other 11

0. Divide balls into sets of 6. Weigh on a balance and select the heavier set.
1. Divide the heavier set into sets of 3. Weigh on a balance and select the heavier set.
2. Take two balls from the heavier set. Weigh on a balance.
Select the heavier ball.
If the two balls are equal, the third ball from the set is heavier.

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jpg

In reply to Re^2: Odd Ball Challenge by jpeg
in thread Odd Ball Challenge by Limbic~Region

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