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.
% N0 P E* P; e8 z& \9 r- 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.
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中间那个说我也不知道我戴什么颜色帽子.
# V h$ t1 N- I9 }7 {TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。- 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.0 H3 x9 K4 T# i* G5 C, t5 Q R
- #1 must be wearing RED |