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Solution of problem N4505 probability theory
4505. There are 8 white and 4 black balls in the urn. A ball is taken out of the urn at random 2 times. Find the probability that both balls removed will be of the same color if the first ball is not returned to the urn.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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Discount for regular customers! If the total of your purchases from the seller
Massimo86
exceeds: