Solution of problem N3364 probability theory

Solution of problem N3364 probability theory

3364. Of the 40 entrance examinations, the student knows 30. Find the probability that among the three randomly chosen questions the student knows: a) 3 questions, b) 2 questions, c) 1 question.

Additional information:

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

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