Решение задачи N4321 теория вероятностей
4321. There are 3 white and 7 black balls in the box. What is the probability that two balls drawn at random will turn out to be white.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.