3108. In stock there are 20 kinescopes, and 15 of them

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Uploaded: 04.11.2018
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3108. In stock there are 20 kinescopes, and 15 of them are made by Lviv plant. Find the probability that among the 5 taken at random kinescopes there will be 3 kinescopes of the Lvov plant.

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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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