in reply to Re: Odd Ball Challenge
in thread Odd Ball Challenge

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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Re^3: Odd Ball Challenge
by Limbic~Region (Chancellor) on Jun 24, 2005 at 11:53 UTC
    jpeg,
    Unfortunately, you don't know if the ball is heavy or light. A solution set has multiple outcomes but there are at least two solution sets that I have thought of. The Monastery now supports real spoiler tags by the way.

    Cheers - L~R