Probability Question

Hi guys!  This should be a pretty easy one...

Say 1/8th of the population like baseball. Pick a random group of 8 people. What is the probability that 1 of them likes baseball?

I know the probability that _all_ of them like baseball is (1/8th)^8. Is the probability that only 1 of them likes baseball simply 1/8th? What is the probability that at _least_ one of them likes baseball? It seems to me like it should be an even chance...

If you know, what are the relevant formulas?

Thanks!  Look forward to hearing from you :)

-- Ned Ruggeri
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