Solution of problem N5170 probability theory

Solution of problem N5170 probability theory

5170. There are 14 parts in a box, 3 of which are defective. The assembler draws 3 pieces at random. Find the probability that
a) the extracted parts are of high quality;
b) among the extracted 1 defective part and 2 quality.

Additional information:

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

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