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Solution of problem N3030 probability theory
3030. In an urn there are 20 balls: 16 white, 4 black. 3 balls are taken out of the urn at once. What is the probability that 2 of them will be white and 1 black?
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: