三个红色和两个黑色
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最后那个说我不知道我戴什么颜色帽子.* h0 @/ @/ R, J5 ^3 [
- the front #1 , #2 must not be black/black. Otherwise, #3 will know he is red. #1/#2 must be red/red or red/black or black/red.: q' C; ?. A" K# X
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中间那个说我也不知道我戴什么颜色帽子.
$ _7 v U* w* Y, N% g公仔箱論壇- for #2, if he see #1 wearing black, he can be sure he is red. since #2 cannot be sure, then #1 must NOT be wearing black.
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) [0 X5 _7 O9 i# u+ E5.39.217.77:8898但是第一个说我知道我戴什么颜色帽子.9 W/ O1 e9 j! r; I' ^
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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