Решение задачи N4911 теория вероятностей
4911. There are 30 parts in the batch, five of them are non-standard. Picked 4 at random. What is the probability that there are 2 standard parts among the parts taken?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.