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What is the number of ways 2 balls can be arranged in 5 boxes? The boxes may not contain more than 1 ball. The balls are of different colors.

I forgot to mention the order of the boxes are important. In the sense I the 5 boxes which I have are not identical.. they are of different sizes.

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    Are the two balls identical, or can they be distinguished form each other (eg different colour, size or weight)?2012-08-29

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