Given an event that happens, say, 1 out of every 50 times, how many attempts must take place 'til the odds are 50% on it happening? How about, say, 99%?
Obviously, with one attempt, the chance is 2% -- how about after that, though?
If you're willing, please show your work. ;)
EDIT:Oh, dear; I think I phrased things incorrectly. How about this,
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