Solution of problem N4806 probability theory

Solution of problem N4806 probability theory

4806. There are ten identical products in a box, and three of them are painted. Two items were retrieved at random. Find the probability that among the two items retrieved there will be:
a) one painted product;
b) at least one painted product.

Additional information:

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

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