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.公仔箱論壇! \; g' _) Q, ^) k/ 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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4 }, h+ d; K& q: k' d; l中间那个说我也不知道我戴什么颜色帽子.
- v4 z. N2 o' p5 h7 l' I4 R- 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.公仔箱論壇! A! y; |2 l: _9 L" s
& c+ C0 B5 g$ n" ztvb now,tvbnow,bttvb但是第一个说我知道我戴什么颜色帽子.公仔箱論壇2 q( j1 M0 o3 x0 K4 n
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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