三个红色和两个黑色; Y$ l+ z& J2 V3 D9 c2 t- b
+ O& B" j# k1 x最后那个说我不知道我戴什么颜色帽子.
8 [* E$ O+ I0 e% Htvb now,tvbnow,bttvb- 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.
8 ^* p: n2 k" V. Xtvb now,tvbnow,bttvb5 t8 a% R- {+ j6 K# u
中间那个说我也不知道我戴什么颜色帽子.
) ~7 s/ c8 L! f1 `6 o5 Z公仔箱論壇- 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.& c* A1 k" P' A% C
- W, c' n8 N3 y4 z. M, Z公仔箱論壇但是第一个说我知道我戴什么颜色帽子.0 o4 e2 |/ L3 ~
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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