三个红色和两个黑色tvb now,tvbnow,bttvb2 e% l3 z4 g V2 n% ]
3 {6 G( Q; {! X* `; v( f最后那个说我不知道我戴什么颜色帽子.
0 r& w5 O/ b. M- 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.! P2 |, i, D# Q% S
; C& E6 t2 Y6 w中间那个说我也不知道我戴什么颜色帽子.
/ C7 z8 J7 q0 I- f1 l8 T9 X- 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.os.tvboxnow.com% T( ?' w8 X/ |: u# y
( r$ s' J" O4 |7 nos.tvboxnow.com但是第一个说我知道我戴什么颜色帽子.os.tvboxnow.com& t1 I* |2 ]* t7 Z
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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