Решение задачи N5274 теория вероятностей

5274. In a batch of 8 items, 3 are defective. From the batch, 3 products are randomly selected for control. The lot is rejected if there are more than two defective items selected for inspection. Find the probability that the lot will be rejected.

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