SOLUTION: Assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 3 balls one after another without replacement. What probability should b

Algebra ->  Probability-and-statistics -> SOLUTION: Assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 3 balls one after another without replacement. What probability should b      Log On


   

Question 269541: Assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 3 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd number?
Answer by scott8148(6628) About Me  (Show Source):
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number of ways to select 3 out of 8 ___ 8C3 = 56

number of ways to select 3 even balls ___ 4C3 = 4

number of ways to select at least one odd ball ___ 56 - 4 = 52

probability of at least one odd ball ___ 52 / 56 = 13 / 14 = .93 (approx)