Решение задачи N4549 теория вероятностей
4549. There are 7 white and 3 black balls in the urn. One ball is taken out of the urn for good luck. What is the probability that the ball taken out is white?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.