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Solution of problem N3100 probability theory
3100. In the box there are 7 red and 5 blue pencils. Randomly took three pencils. Find the probability that among the selected pencils - exactly 2 red and 1 blue.
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: