3980. One-type products from three plants are on sale. Marriage respectively is 3, 1, 16%. The first plant supplies 40% of production, the second - 25%, the third - 35%. A single item is removed at random.

1) What is the probability to purchase a defective product.

2) Which plant most likely produced an acquired good-quality product.

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