三个红色和两个黑色5 G4 _: m6 d6 f/ m2 P0 B
公仔箱論壇* d. c/ F0 [: W. w6 y- y/ J
最后那个说我不知道我戴什么颜色帽子.
# Y, x8 u/ A3 U: l6 v* ]! L, a4 o- 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.2 O& y$ S4 F' U% a
0 Y# S' y' o$ g9 X* [6 G8 \3 }; ~
中间那个说我也不知道我戴什么颜色帽子.
/ d1 [3 T% J# F! V% m- 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.
8 @: d! u9 t, [" |公仔箱論壇
# G( l; L/ }4 V0 N公仔箱論壇但是第一个说我知道我戴什么颜色帽子.
8 n. G0 Q! |/ r' d& K3 A- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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