4308. In the box are 4 white and 1 black ball. 2 balls

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Description 4308. In the box are 4 white and 1 black ball. 2 balls

4308. In the box are 4 white and 1 black ball. 2 balls are taken out at random. Find the probability that 2 white balls are pulled out.

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

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