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# Probability

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A jar contains marbles of different colors: 4 white, 6 black, 6 red, and 4 blue. On two random drawings, without replacement, find the probability that the first is black and the second is white. Assume that the draws are independent.

##### Solution Summary

A jar contains marbles of different colors: 4 white, 6 black, 6 red, and 4 blue. On two random drawings, without replacement, find the probability that the first is black and the second is white. Assume that the draws are independent.

##### Solution Preview

n(white) = 4
n(black) = 6
n(red) = 6
n(blue) = 4
n(total) = 4+6+6+4 = 20

Probability first black P(1:B) = ...

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• MSc , Pune University, India
• PhD (IP), Pune University, India
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