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Solution of problem N3556 probability theory
3556. In an urn there are 20 balls: 16 white and 4 black. From the urn immediately remove 2 balls. What is the probability that at least one ball is 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
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