Решение задачи N3717 теория вероятностей

3717. Two women workers stuffed on different punches with the same set of punched cards. The probability that the first worker makes a mistake is 0.005; for the second worker, this probability is 0.01. Find the probability that an error will be detected when checking punch cards.

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)