jar

the first man to set the lamp is "off", the others will  say the lampis "off" , then every one  can sure the lamp is "off" , so  100 men have been to the gardon.

jar

I am right!   from 2009-1-6 , I got it!

jar

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- n& G) ]# e8 w. }2 z6 U4 j公仔箱論壇答案：选一个囚犯出来负责关灯，其余的负责开灯，而且每人只能开一次，当这个囚犯关够99次的时候，就知道所有的囚犯都来过院子了。公仔箱論壇7 l6 q! K6 ]% }  x; S

# V: D, h! S* A9 f. d公仔箱論壇Can you make sure that is only 2 or 4 or 6......... to open the lamp? otherwise, the others do not know what station of the lamp!  公仔箱論壇+ }. a  M# \7 u) h0 t. k
please see:   jar  2009-01-07 my option:   all can see and say the lamp is "on" that can sure everyboby have been to the gardon!

jar

You make a wrong answer! please give me your money!
$ A0 E; E0 U9 Z- d  A$ D* A" V& n3 q5.39.217.76   I want to up grade.  I give you my right answers.!