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Solution of problem N3559 probability theory
3559. In the urn there are 7 balls with numbers from 1 to 7. Balls are retrieved at random one by one without return. What is the probability that with the first 4 extracts the numbers of the balls will coincide with the numbers of the extracts?
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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