Solution of problem N3808 probability theory total prob

Solution of problem N3808 probability theory total prob

3808. Parts from three machines come to the assembly shop of the plant. The first machine gives 1% of marriage, the second - 2%, the third - 3%. Determine the probability of getting a broken part to be assembled, if 20, 10, 20 details were received from each machine gun in the workshop.

Additional information:

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