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。2 c0 }; c0 q) }# h( b/ e
假設C和B是同一顏色, 那D就會立刻知道自己的顏色，$ u' y: A9 V7 E' N3 Q- ^6 v
而不會過了一會才作答，C發現D不知道答案時就表示
/ v# U! M4 v9 n- \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.
- M" q/ _) y7 P, NThat means D is not sure the answer by seeing one white and one black.
3 o& `- E# `- B2 e7 h6 s# {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 tvb now,tvbnow,bttvb% }- u# M& ~8 ^8 V3 {7 }& q
5.39.217.77:88984 c% I. j% h( l& P. f8 M5 i
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?