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2900. In a group of 30 students, 8 students did not prepare for the exam. 4 students are randomly called. What is the probability that two of them are prepared, and two are not?
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- Added to the site 25.10.2018
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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 N2900 probability theory
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