三个红色和两个黑色
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, F5 {, b3 a3 @5.39.217.76最后那个说我不知道我戴什么颜色帽子.
2 P* b% ~. ~1 P3 g* Z& t- 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.' L: ~$ Y" c* p, P2 p
- 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.5.39.217.768 M0 V/ t+ ?! i" F- G* C( C4 R+ F
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。- X2 \5 x4 c0 C5 `
但是第一个说我知道我戴什么颜色帽子./ R8 p: h: t; d
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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