三个红色和两个黑色5.39.217.77:88982 f4 h, f. t1 S- H+ F/ B! |3 v3 P
. t: V6 ]/ ]2 Z3 ]0 N u最后那个说我不知道我戴什么颜色帽子.
6 n: m) y# p% {* r5.39.217.77:8898- 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.5.39.217.77:8898 C) l5 k$ o4 X- g$ s1 G. {
1 C7 T# |) y* J
中间那个说我也不知道我戴什么颜色帽子.8 s- B, M* d d4 V1 ]5 I& N5 H
- 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.
: @& {+ ^$ z+ |: e3 I; v2 J
# _5 l7 q" R2 y$ b但是第一个说我知道我戴什么颜色帽子.
+ X( h* d2 r# f6 n5 r% w- #1 must be wearing RED |
發表於 2008-12-3 10:06 AM
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