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4508. From the urn, in which there are 13 white and 9 b
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Content: teorver_4508.doc 37,5 kB
Product description
4508. From the urn, in which there are 13 white and 9 black balls, two balls are taken out at random. What is the probability that both balls will turn out to be black?
Additional information
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)