過去のスッドレたち 
http://makimo.to/cgi-bin/search/search.cgi?q=誕生日のパラドクス&andor=AND&sf=2&H=ikenai&view=table&all=on&shw=30&D=math
1: http://science.2ch.net/test/read.cgi/math/1021473768/
2: http://science.2ch.net/test/read.cgi/math/1038407245/
3: http://science.2ch.net/test/read.cgi/math/1041085692/
4: http://science.2ch.net/test/read.cgi/math/1041659525/
5: http://science.2ch.net/test/read.cgi/math/1050319796/
6: http://science3.2ch.net/test/read.cgi/math/1066521274/
7: http://science4.2ch.net/test/read.cgi/math/1098393483/
8: http://science6.2ch.net/test/read.cgi/math/1126016995/
9: http://kamome.2ch.net/test/read.cgi/math/1233134861/