Решение задачи N3266 теория вероятностей
3266. From the basket, in which there are 15 white and 5 black balls, take out 2 balls at random. What is the probability that both balls will turn black?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.