三个红色和两个黑色
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5 G8 S% f& |% K7 y9 u4 {最后那个说我不知道我戴什么颜色帽子.www3.tvboxnow.com- h; M/ _7 U9 C& P7 e
- 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.tvb now,tvbnow,bttvb4 y- T2 J4 B( @3 h( }
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中间那个说我也不知道我戴什么颜色帽子.
i( {- }1 ~; ]/ T0 Nwww3.tvboxnow.com- 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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! G7 ^) j {4 l3 g& y, z+ |但是第一个说我知道我戴什么颜色帽子.www3.tvboxnow.com% V D/ ]& h% D- {3 k: b$ d
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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