三个红色和两个黑色
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6 E+ Q7 p7 o5 }; S/ P+ b最后那个说我不知道我戴什么颜色帽子.
9 B9 }/ {, I" g* ^4 ~tvb 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.
( Y& y) `0 d, E. Z4 w5 u2 i) ^8 c公仔箱論壇
; C: m: F+ q: q中间那个说我也不知道我戴什么颜色帽子.7 C* e! \+ ]: P) \
- 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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: F, G1 E6 ?9 ^% Ctvboxnow.com但是第一个说我知道我戴什么颜色帽子.1 l# f- I* D8 F) X& {
- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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