三个红色和两个黑色* [4 _6 E" t& @4 I% q. [5 ^
' x7 n6 L" a4 {' O9 [" n/ X最后那个说我不知道我戴什么颜色帽子.
0 {, g% I& M* M* D+ p- g1 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.
) E" W% k( O7 t, v* l0 h% Uwww2.tvboxnow.comwww2.tvboxnow.com- \' v' y" z; z! |
中间那个说我也不知道我戴什么颜色帽子.
3 F8 O$ |; g; bwww2.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., J0 l6 ` `& ^9 W. U0 A. V7 E
. V ~& P3 n; c Ntvb now,tvbnow,bttvb但是第一个说我知道我戴什么颜色帽子.2 p: T& O, N, F/ r
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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