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Solution of problem N4564 probability theory
4564. There are 12 balls in the urn, differing only in color. Among these balls there are 5 black and 7 white. What is the probability that the ball sticking out at random turns out to be 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
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