"scott" <sco### [at] scottcom> wrote:
> If you have a box with N balls numbered 1 to N, and you repeatedly pull one
> out at random (replacing it each time), on average how many times would you
> expect to pull out a ball until you have seen all the balls 1 to N?

For sufficiently large N, I'd expect to keep pulling out balls until I die. I
guess something in the order of N=1000 should be sufficient for this.

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