三个红色和两个黑色5.39.217.77:8898+ S1 g7 A( f3 O( A% D9 a8 O
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最后那个说我不知道我戴什么颜色帽子.* m7 G" ]+ X/ P8 r7 O' 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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$ a+ R, ~" x! S. t8 j- [$ Q8 @+ [中间那个说我也不知道我戴什么颜色帽子.
. `5 J( f7 X( o- 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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; n* E- `* \$ r/ w5.39.217.77:8898但是第一个说我知道我戴什么颜色帽子.
% R7 s0 E! u) l! c* |- U% xtvb now,tvbnow,bttvb- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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