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Solution of problem N4587 probability theory
4587. The urn contains 5 white, 20 red and 10 black balls, not differing in size. The balls are mixed thoroughly and then 1 ball is taken out at random. What is the likelihood that the ball drawn will be white or black?
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: