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If there are 1000 raffle tickets sold for a fund raiser and you buy one ticket what's the probability that you won't win
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If there are 1000 raffle tickets sold for a fund raiser and you buy one ticket what's the probability that you won't win

User Shay Elkayam
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The probability of success here is 1 in 1000.  The probability of failure is 1 less 1/1000, or 0.999.  These two probabilities "complement" one another.
User Antoine Zambelli
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