Drsoccerball
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- May 28, 2014
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- HSC
- 2015
Re: 2015 permutation X2 marathon
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First of all make sure you give the answer with the questionDont know if this question is hard enough to be X2, but anyways...
A classic b-day problem:
30 people in a room, what is the probability that at least 2 people have the same b-day
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