The answer should be 1 - (365!/265!)/(365^100).

送交者: lala 于 December 13, 2002 11:41:15:

回答: 圣诞前, of course, today is included. 由 lala 于 December 13, 2002 11:35:13:

不行 - 小朋友 (22 bytes) 12:00:59 12/13/02 (4)
- Then, it is 0.9999996... - lala (0 bytes) 12:23:50 12/13/02 (3)
  - Lala 滑头... :-))) - Nobody (72 bytes) 14:30:16 12/13/02 (0)
  - 就是说几乎每个人 - 小朋友 (46 bytes) 13:26:43 12/13/02 (1)
    - For any specified person, the probability that 这一百个人中间能找到和他同生日的人 is 1 - (364/365)^{99} = 0.2378448. :-) - lala (0 bytes) 15:02:51 12/13/02 (0)