3414. Of the 48 questions in the course, the student kn

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3414. Of the 48 questions in the course, the student knows 30. In the exam, he is randomly offered two questions. What is the probability that a student will answer correctly: a) at least one question; b) to both questions.

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

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