Решение задачи N4928 теория вероятностей
4928. There are 20 parts in a box, 15 of them are standard parts. 4 parts are taken at random. What is the probability that:
a) 3 of them are standard
b) at least one standard
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.