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Solution of problem N4557 probability theory
4557. The urn contains 10 white, 15 black, 20 blue and 25 red balls. Find the probability that the ball taken out turns out to be blue or 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: