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2863. In a group of 30 students - 9 are poorly performing. From the group at random choose 2 people. What is the probability that among them: a) only one poorly performing student; b) at least one poorly performing student?
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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 N2863 probability theory
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