I was on a game forum and I saw this question come up, I was interested on the ways that It can be accomplished so I posed it here

Apparently, NVIDIA uses this as a test question when they hire new programmers...

Quote:

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Q: The function rand5() returns an integer between 1 and 5, inclusive (that's 1,2,3,4,5), with equal probability. Use rand5() to create a function called rand7() that returns an integer between 1 and 7, inclusive, with equal probability.

You must try to find the most efficient, elegant way to solve this problem.

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It will be interesting to see how it can be done

Anyways, I'm off
Adoado