Решение задачи N4570 теория вероятностей
4570. There are 3 white, 4 black, 5 red balls in the urn. What is the probability that the ball taken out is black?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.