三个红色和两个黑色
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8 J, n+ {: G* v: H最后那个说我不知道我戴什么颜色帽子.tvb now,tvbnow,bttvb/ o _1 ^ h% ^& S9 W5 p
- 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.tvb now,tvbnow,bttvb( A2 S; d/ u. ^& |! m$ D. n/ S4 c
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中间那个说我也不知道我戴什么颜色帽子.- }7 ^( \: v! r
- 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.
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1 \6 M0 v9 U7 o6 x但是第一个说我知道我戴什么颜色帽子.tvb now,tvbnow,bttvb9 I3 I1 S: B+ f% ?. D- y5 F3 c
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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