Решение задачи N3641 теория вероятностей полная вероятн

3641. Three workers make similar products. The first worker made 40 products, the second - 35, the third - 25. The probability of marriage for the first worker is 0.03, for the second - 0.02, for the third - 0.01. What is the probability that a product taken at random will be defective?

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