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A bag contains five white balls and five black balls. Your goal is to draw two black balls.

You draw two balls at random. Once you have drawn two balls, you put back any white balls, and redraw so that you again have two drawn balls. What is the probability that you now have two black balls? (Include the probability that you chose two black balls on the first draw.)

 Dec 11, 2019
 #1
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I'm getting an answer of 14/81.

 Dec 11, 2019
 #2
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This question has been asked and answered about a billion times.

 Dec 11, 2019

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