Решение задачи N4939 теория вероятностей
4939. There are 30 parts randomly placed in a box, 7 of them are standard. The worker takes 3 parts at random. Find the probability that at least one of the parts taken is standard.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.