Решение задачи N5063 теория вероятностей
5063. There are 20 parts in a box, 4 of them are defective. 2 parts are taken out of the box at once. Find the probability that both of them are valid. Solved in two ways.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.