If three balls are selected at random from an urn containing 5 red, 10 white, and 15

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If three balls are selected at random from an urn containing 5 red, 10 white, and 15 blue balls, what is the probability that they will all be the same color 

(a) If each ball is replaced before the next one is withdrawn? 

(b) If the balls selected are not replaced?

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Introduction To Logic

ISBN: 9781138500860

15th Edition

Authors: Irving M. Copi, Carl Cohen, Victor Rodych

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