Solution of problem N2834 probability theory

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2834. In the group of 30 students. In the control work, 5 people received marks "excellent", 10 people - "good", 10 people - "satisfactory". What is the likelihood that all three students brought to the blackboard have unsatisfactory marks on the test?

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  • Content type File
  • Content description 29 kB
  • Updated on the site 23.10.2018
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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