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One item is filed under this topic.
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12 coins |
2010-07-07 |
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From Eden:
We have 12 coins same in size and shape and also weight.
But among these, one coin which has same size and shape, but not in weight
and we can't know that this coin was lighter or heavier.
We must decide which coin was lighter or heavier among these 12 coins in
4 times of weighting with scale.
Answered by Stephen La Rocque and Tyler Wood. |
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