A bowl contains 75 balls. Of these, 10 are white, 11 are red, 12 are blue, 13 are green
Chapter 8, Problem 29(choose chapter or problem)
A bowl contains 75 balls. Of these, 10 are white, 11 are red, 12 are blue, 13 are green, 14 are yellow and 15 are black. What is the smallest number of balls that can be selected from the bowl to be certain that at least one ball of every color is chosen?
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