4325. In the box were 20 balls. Of these, 12 are white

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Description 4325. In the box were 20 balls. Of these, 12 are white

4325. In the box were 20 balls. Of these, 12 are white and 8 are black. 2 balls are taken out at random. What is the likelihood that they are the same color?

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

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