Solution of problem N3586 probability theory

Solution of problem N3586 probability theory

3586. In two batches respectively 75% and 80% of a good-quality product. Randomly take one product from each batch. Find the probability that among them: a) at least one defective; b) one benign, one defective.

Additional information:

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

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