Solution of problem N5191 probability theory

Solution of problem N5191 probability theory

5191. In a batch containing 11 parts, 4 are defective. 5 parts are chosen at random. The batch will be rejected if two defective parts are among the selected parts. Find the probability that the batch will be declared unsuitable.

Additional information:

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

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