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Solution of problem N4448 probability theory
4448. There are 7 white balls and 12 black balls in the urn. At the same time, 2 balls are taken out at random. What is the probability that both balls will be white?
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: