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Solution of problem N4646 probability theory
4646. 20 textbooks are randomly placed on a shelf in the library, five of them are bound. The librarian takes three textbooks at random. Find the probability that at least one of the selected textbooks will be bound.
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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exceeds: