Решение задачи N2581 теория вероятностей
2581. In an urn there are 20 balls: 12 white and 8 black. What is the probability that 2 balls taken out for luck will be white?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.