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Nine billiard-balls are lying in front of you. Except for one they all have the same weight.
The exception is a little bit heavier than the others.
What is the minimum number of times you have to use a scale in order to find the heavier billiard ball?
PM answers please.
The exception is a little bit heavier than the others.
What is the minimum number of times you have to use a scale in order to find the heavier billiard ball?
PM answers please.