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。, s' v3 s- O/ g% u- v! u3 L
假設C和B是同一顏色, 那D就會立刻知道自己的顏色，! u& o( x8 X1 D3 m7 G/ J- ~
而不會過了一會才作答，C發現D不知道答案時就表示
( h- ]5 V6 _! `0 I. g5 K8 M- o% u( ]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.
& ]( [9 x9 \! h# Z5 s8 t5.39.217.76That means D is not sure the answer by seeing one white and one black.
# ?# X% }3 r" L4 `" N公仔箱論壇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 5.39.217.765 \9 [1 J" [: R: m
公仔箱論壇4 {. z/ R4 q/ y( m
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?