三个红色和两个黑色
! m. c1 }" d! u2 u e
, i( h3 _1 v% G# Z ]最后那个说我不知道我戴什么颜色帽子.
+ i3 |' ?6 s9 a1 x* g+ L5.39.217.76- 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.
0 u |5 J2 @0 z6 K7 U
0 \; ^/ v% P$ ~4 b) T" ]公仔箱論壇中间那个说我也不知道我戴什么颜色帽子.
" e; v1 N: V$ m/ L5 r' T5.39.217.76- 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.
/ p% O5 I& K+ \6 q2 D* o
, D: r7 V! F% K* r+ F- X7 ?但是第一个说我知道我戴什么颜色帽子.* g' S! z' p$ T* Y% X; O
- #1 must be wearing RED |