Asked by chris
an urn contains 3 blue chips and 7 red chips. sequentially draw 3 chips without replacement. what is the probability that all drawn chips will not be the same color?
Answers
Answered by
Scott
there are 10C3 ways of drawing 3 chips
there are 7C3 ways of drawing 3 red chips
there is one way to draw 3 blue chips
p = 1 - [(7C3 + 1) / 10C3]
there are 7C3 ways of drawing 3 red chips
there is one way to draw 3 blue chips
p = 1 - [(7C3 + 1) / 10C3]
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