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Question-159715




Question Number 159715 by cortano last updated on 20/Nov/21
Commented by mr W last updated on 20/Nov/21
if one draws 12 balls, they could be  3 red ones, 3 green ones, 3 blacks,  3 blue one. if one draws one ball more,  one color must have 4 balls. so the  answer is 13 balls.
$${if}\:{one}\:{draws}\:\mathrm{12}\:{balls},\:{they}\:{could}\:{be} \\ $$$$\mathrm{3}\:{red}\:{ones},\:\mathrm{3}\:{green}\:{ones},\:\mathrm{3}\:{blacks}, \\ $$$$\mathrm{3}\:{blue}\:{one}.\:{if}\:{one}\:{draws}\:{one}\:{ball}\:{more}, \\ $$$${one}\:{color}\:{must}\:{have}\:\mathrm{4}\:{balls}.\:{so}\:{the} \\ $$$${answer}\:{is}\:\mathrm{13}\:{balls}. \\ $$

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