| You have 12 billiard balls and a balance. All of the balls wiegh exactly the same except one, which is either heavier or lighter than all the others. The balance can accomodate any number of balls. How can you determine which is the odd ball (and if it is heavier or lighter) using the balance only 3 times? | ![]() |
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| me.
photo erin 'anarchy' hooley |
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