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Urn $A$ contains $2$ white balls, and urn $b$ contains $1$ white ball and $2$ black balls.  Two balls are drawn at random from Urn $B$, and without their color being noted, are placed in urn $A$.  Then one ball is drawn from urn $A$.  What is the probability that this ball is white?

 Dec 22, 2019
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I don't answer questions posted by people who are too lazy to remove unwanted dollar signs.

 Dec 22, 2019

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