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Solution of problem N2909 probability theory
2909. In the urn there are 5 white and 15 black balls, two balls are randomly taken out of the urn. What is the probability that they will be white.
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: