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3467. At the exam, students are offered 20 tickets, each with 3 questions. Of the 60 questions included in the tickets, the student knows 50. What is the probability that a ticket taken by a student will consist of questions known to him?
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- Added to the site 26.11.2018
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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Solution of problem N3467 probability theory
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