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?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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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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