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There are 365 days a year? |
Travel Info So how many people do i have to lock in one room, To get 50% change that there are at least 2 people share the same birthday (Year not included)? Travel Tips Exactly 23 peoples Others 100 or 50 at least 23 What? 183 You need 23 people in a room for the chances to be better than 50% of a pair of people sharing the same birthday. It's all to do with the number of pairings - 253 possible pairings. Yes, 23 is correct. As usual, Wikipedi know more about it: http://en.wikipedia.org/wiki/birthday_pa... |
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