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.5.39.217.77:88989 c: F, f( M4 `4 y2 O1 o' v
- 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.5.39.217.77:8898' y6 Z4 B. J, @2 C% {% q ]: m9 P
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中间那个说我也不知道我戴什么颜色帽子.
% b! Y% @9 |, ^9 W0 U0 hTVBNOW 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.5 f2 @) K& y( q+ S; o! v
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但是第一个说我知道我戴什么颜色帽子./ T: l8 n' Y5 K9 g
- #1 must be wearing RED |