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Solution of problem N3130 probability theory
3130. In the box are 5 blue, 9 red and 13 green pencils. At the same time remove 23 pencils. Find the probability that among them will be 3 blue and 7 red.
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
Massimo86
exceeds: