Решение задачи N4938 теория вероятностей
4938. There are 20 parts randomly placed in a box, five of which are standard. The worker takes three 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.