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.
2 Q2 j; |! c. r6 {# R' G5.39.217.76- 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., A# Q6 x9 K5 z7 _& y# j/ I
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中间那个说我也不知道我戴什么颜色帽子.公仔箱論壇 ?; ^2 @# P _4 u
- 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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但是第一个说我知道我戴什么颜色帽子.
# S* B) x* g0 U% S: c* I$ I4 Q公仔箱論壇- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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