Solution of problem N2993 probability theory

Solution of problem N2993 probability theory

2993. The group brought 30 manuals in mathematics, including 20 in mathematical analysis and 10 in probability theory. A student randomly takes 2 manuals. Find the probability that: a) both manuals will be on the theory of probability, b) at least one will be on the theory of probability.

Additional information:

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

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