4304. There are 4 blue and 5 green balls in the box. 2

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Description 4304. There are 4 blue and 5 green balls in the box. 2

4304. There are 4 blue and 5 green balls in the box. 2 balls are taken out of the box at random. What is the likelihood that these balls will turn out to be different colors?

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

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