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Solution of problem N2819 probability theory
2819. In the urn 2 white and 7 black balls. From it, they remove 2 balls at random (without return). What is the likelihood that both will be of different colors?
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: