A bowl contains 10 red balls and 10 blue balls. a woman selects the balls at random without looking at them.

a. how many balls must she select to be sure of having at least three balls of the same color?

b. how many balls must she select to be sure of having at least three blue balls?

Question

26 July, 05:33

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Answers (1)

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Gaven · Answer 1

A, 3 red and 2 blue, or 3 blue and 2 red = 3+2 = 5

B. 5 (from above) x 3 (blue) = 15 - 2 (red) = 13

A bowl contains 10 red balls and 10 blue balls. a woman selects the balls at random without looking at them.a. how many balls must she select to be sure of having at least three balls of the same color?b. how many balls must she select to be sure of having at least three blue balls?