网上老师,是大学比较差的...用条件期望算,可以,自找麻烦.
所有跟帖:
• 如从13算起,已知00,因15次可能是0,1,则 -wxcfan123- ♂ (69 bytes) () 09/19/2011 postreply 18:27:57
• Prob. tree can tell you everything. -jinjing- ♀ (0 bytes) () 09/20/2011 postreply 10:18:20
• 如从13算起,已知00,因15次可能是0,1,则 -wxcfan123- ♂ (69 bytes) () 09/19/2011 postreply 18:27:57
• Prob. tree can tell you everything. -jinjing- ♀ (0 bytes) () 09/20/2011 postreply 10:18:20