| [ QuizWit ] in KIDS 글 쓴 이(By): toddle (Mr.Prodo) 날 짜 (Date): 2003년 11월 27일 목요일 오후 04시 33분 12초 제 목(Title): Re: Probability problem Well, My original problem was about three people, but if two people, P{No two people have same birthday} ~ exp{-n(n-1)/730} (poisson..) The smallest integer is 23 or 24? anyway With the same approach, Consider three people, nC3/365^2 makes the smallest integer about 84.. I don't know whether this calculation is exact or not but the error range is likely less than 1 .. -------------------------- ok, the exact answer is 23 and 84 respectively. |