wingdragon89

C.....

中國籍男子

C答中了。A和B一定答不到因看不到其他人。' T" u+ G7 z, g4 v( h+ n8 T  z
假設C和B是同一顏色, 那D就會立刻知道自己的顏色，
4 l+ S. T6 I' K5.39.217.76而不會過了一會才作答，C發現D不知道答案時就表示; E9 @+ F8 a, ~7 \
C和B是不同顏色，那麼C只要答和B相反的顏色就對了。

南極

WHY???

mavvvv

i want to know the answer

waha1ha1

C knows the answer by deducing D is not yelling out the answer.
1 A& m+ X6 \2 A9 l  F* Utvb now,tvbnow,bttvbThat means D is not sure the answer by seeing one white and one black.
6 Q/ t% v* X/ o" }7 pC saw B is wearing the white, hence he is wearing the black

abilam123

thank you

jonnyfang

see this before but forgot answer

sws2108

係點解呢？

wong32159

thank a lot

rockylok

dfdfd

KekHao

我觉得是D 呢。。。

formax

好難哦~~

bluekid2030

1# wasimasterQ
" A% G6 J/ e+ d- u! BTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
% P6 S. v  J& T. w# XTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。C同B都答到

roembro

C, because he saw B's hat is white and he knows D can see the color of B's and his hat. If B and his hat has the same color, D would speak out. But D kept silent, so C knows that his hat's color must be different.

morrislch

may i see the answer?