三个红色和两个黑色
2 ~3 h& k1 |' g. {tvboxnow.comtvboxnow.com6 c9 z. F# X' w2 M& f6 F4 E
最后那个说我不知道我戴什么颜色帽子.
. s% @4 C- `3 l1 g) M" J" M, Ptvb now,tvbnow,bttvb- 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.9 s2 a+ q! T* I& u3 g- l3 j e
, [# i2 U* R9 u& j0 c, A- [- B中间那个说我也不知道我戴什么颜色帽子.
' ^0 j% U$ I8 v9 e2 ]% |1 K- 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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但是第一个说我知道我戴什么颜色帽子.
8 K2 ^0 e" ^' \6 qtvboxnow.com- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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