Решение задачи N4838 теория вероятностей
4838. There are 50 identical parts. Among them, 20 are painted. Take 2 pieces. Find the probability that a) both parts are painted b) at least one is not painted
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.