三个红色和两个黑色公仔箱論壇( X: Q' ?7 g3 G* f9 C6 {
# W. R+ @0 e5 _ j8 _0 m最后那个说我不知道我戴什么颜色帽子.
; a" L+ z- I2 N& d; \, L7 L: _9 d& C公仔箱論壇- 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.
+ r" `3 c/ b, k( s7 F! u [2 Q+ V公仔箱論壇
4 i' U6 N' O9 y$ q1 Nos.tvboxnow.com中间那个说我也不知道我戴什么颜色帽子.os.tvboxnow.com9 e% N: T' H r5 g$ w: n
- 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.2 K$ O7 V* F, M5 E& M, J; W
. d( P' q$ q6 s1 ]" Z4 {公仔箱論壇但是第一个说我知道我戴什么颜色帽子.- x! ?4 y0 z2 w% T( n
- #1 must be wearing RED |