回複：回複：回複：回複：經典老智力題

The first guy guesses the color that is the mod-2 sum of all the rest. He has 50% chance of being right. The other 99 guys can deduce their own color based on observation and the previous guys' answers.

所有跟帖： 

• Ha,you're wrong as I did first. -Jinjing- ♀ (231 bytes) () 01/31/2010 postreply 20:04:49

• you misunderstood his answer -wxczcbm- ♂ (231 bytes) () 01/31/2010 postreply 20:21:57

• 回複：you misunderstood his answer -jinjing- ♀ (83 bytes) () 01/31/2010 postreply 21:27:38

• 回複：回複：you misunderstood his answer -guest007- ♀ (239 bytes) () 02/02/2010 postreply 15:52:42

• only a joke -jinjing- ♀ (0 bytes) () 02/03/2010 postreply 11:17:20

• "you misunderstood ...." by wxczcbm has the answer in Chinese -guest007- ♀ (38 bytes) () 02/17/2010 postreply 07:44:48

• 回複：回複：回複：回複：回複：經典老智力題 -jinjing- ♀ (387 bytes) () 02/01/2010 postreply 12:27:27

• endofsuburbia 's post has the answer in English -guest007- ♀ (3 bytes) () 02/17/2010 postreply 07:45:47