2860. In a group of 25 students in the test, 5 students

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Uploaded: 25.10.2018
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2860. In a group of 25 students in the test, 5 students received “excellent”, 6 - “good”, 7 - “satisfactory”. What is the likelihood that all 4 students called to the board have a rating of "unsatisfactory"?

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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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