Решение задачи N5196 теория вероятностей

5196. From a batch containing 15 parts, among which 5 are defective, 10 parts are randomly selected. The batch will be recognized as suitable if among the selected parts there are 8 suitable ones. Find the probability that the lot will be accepted.

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