三个红色和两个黑色$ ~; q" m5 i0 L% I% B
公仔箱論壇7 s% D9 a; _$ Y5 r/ A' X
最后那个说我不知道我戴什么颜色帽子.公仔箱論壇+ F1 ?* y3 D$ R7 U# ]8 i. {
- 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.( K! R1 v; V7 Z
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中间那个说我也不知道我戴什么颜色帽子.tvb now,tvbnow,bttvb; k& P4 u' b; ]. D: u
- 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.5.39.217.763 v4 d9 Y* h9 W. H& @5 x {; V
公仔箱論壇. W1 `# t) \9 G" }+ {
但是第一个说我知道我戴什么颜色帽子.
, r/ ^/ G! E' G5.39.217.76- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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