Engineering, 17.10.2020 14:01, zozo1628

A bowl contains 15 red balls, 20 green balls and 12 blue balls. A woman selects balls at random without looking at them. How many balls must she select to be sure of having at least three balls of the same color?

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A bowl contains 15 red balls, 20 green balls and 12 blue balls. A woman selects balls at random with...