correction
jjmmjj
2009-07-09 18:55:19
( reads)
(49/50 + 1/50/50) * (48/49 + 1/48/48) ....*(1/2 + 1/2/2)
(49/50 + 1/50/50) * (48/49 + 1/48/48) ....*(1/2 + 1/2/2)
jjmmjj
2009-07-09 18:57:05(49/50 + 1/50/50) * (48/49 + 1/49/49) ....*(1/2 + 1/2/2)