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。
& Z% w4 X# b. ^+ P6 k8 a+ h8 htvb now,tvbnow,bttvb假設C和B是同一顏色, 那D就會立刻知道自己的顏色，
" b7 A; R) K( P# X0 D; O而不會過了一會才作答，C發現D不知道答案時就表示
4 n4 ^; c' u8 F3 h# S+ x  HC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.
( n) I' M, e8 k8 v, MThat means D is not sure the answer by seeing one white and one black.. H; h& @# b5 t# C. _8 N1 m
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
0 y  X/ {7 ]0 `/ G! n1 s& Rtvb now,tvbnow,bttvb. n! o& b) j$ l9 X5 }5 z
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?