11. A bowl contains 10 red balls and 10 blue balls. A woman selects 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?

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.6: Permutations And Combinations
Problem 59E
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11. A bowl contains 10 red balls and 10 blue balls. A woman selects 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?
Transcribed Image Text:11. A bowl contains 10 red balls and 10 blue balls. A woman selects 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?
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