Solution of problem N4929 probability theory

Solution of problem N4929 probability theory

4929. There are 12 parts in a box, 3 of them are non-standard. 5 items are randomly selected. Find the probability that among them there will be no more than 2 non-standard ones.

Additional information:

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

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