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。
4 E) [# u5 ]8 O) \+ [7 F公仔箱論壇假設C和B是同一顏色, 那D就會立刻知道自己的顏色，9 p5 W5 s- ?2 d5 e, V! F
而不會過了一會才作答，C發現D不知道答案時就表示
4 D& z3 _% j: P* \! D9 NC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.
" l. Y: p& R( `2 \% OThat means D is not sure the answer by seeing one white and one black.+ J0 V- n8 M6 q# v: l
C 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
3 ]: A: J/ E8 q- Ltvb now,tvbnow,bttvb
" S0 @8 O& F9 zC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?