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Solution of problem N4640 probability theory
4640. There are 15 textbooks on a shelf in the library, and five of them are bound. The librarian takes three textbooks at random. Find the probability that at least one of the textbooks taken 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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