三个红色和两个黑色
) H6 w* Q) Y- [! R" Q' [www.tvboxnow.com
' Z7 _' L( v6 s2 U最后那个说我不知道我戴什么颜色帽子.
# Z" K# E+ o& m& J7 Y4 p7 V% v- y- 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.: V: v; `3 {% u
4 V8 j. m7 @1 a1 Z4 q& p2 |中间那个说我也不知道我戴什么颜色帽子.
) M- b. T5 X2 Z$ D, V6 B3 Ztvb now,tvbnow,bttvb- 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 w# F+ }" p7 [& ^/ N' f/ l) V
3 c5 h# j4 Q- J但是第一个说我知道我戴什么颜色帽子.! j6 o7 c4 {" {) E; s7 _" o
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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