3816. The worker serves 3 machines on which the same parts are processed. The probability of marriage for the first is 0.01, for the second 0.02, for the third 0.03. The machined parts are folded in one drawer. The performance of the first machine is 2 times more than the second, and the third is 3 times less than the second. What is the probability that the detail taken at random will be defective?

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