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 x" e. V5 O" Q, d& {2 ~, f
假設C和B是同一顏色, 那D就會立刻知道自己的顏色，
# R+ q& _3 L% d- @0 C* \而不會過了一會才作答，C發現D不知道答案時就表示公仔箱論壇2 A6 q. Y6 y4 O9 x
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.5 }$ u0 L/ d$ g0 m+ u
That means D is not sure the answer by seeing one white and one black.6 D! ]2 B' @- g9 R; z( T" S6 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
! J6 o: Q( c) p9 b5 k% |/ N
8 Y% r+ j) }  q; ~5.39.217.77C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?