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Which is heavier 8 marbles that are exactly alike except that one of them is slightly heavier than the others I then give you a balance scale and ask you to determine the heavier marble in 3 weighings?
Wiki User
∙ 14y ago
Weighing 1: Weigh any four against any other four. The set containing the heavier marble will be heavier.
Weighing 2: Weigh any two from this heavier set against the other two from the set. The pair containing the heavier marble will be heavier.
Weighing 3: Weight the two marbles from the heavier pair against one another and you have the odd marble.
Simple!
Wiki User
∙ 14y ago
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