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Solution of problem N4839 probability theory
4839. There are 20 parts in a box, 15 of which are painted. 4 parts were taken at random. Find the probability that the extracted parts will be painted. Solved in two ways.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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Discount for regular customers! If the total of your purchases from the seller
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