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 Y4 Y7 x  r. o" v* c0 E  W1 L/ u8 \
假設C和B是同一顏色, 那D就會立刻知道自己的顏色，tvb now,tvbnow,bttvb/ b! n7 K' U5 B
而不會過了一會才作答，C發現D不知道答案時就表示
: z" @: U$ q" `5 e/ i' y3 A5.39.217.76C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.1 y' A! v3 V) R, I3 N
That means D is not sure the answer by seeing one white and one black.
, [! m; `, o' o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 5.39.217.76$ K6 m1 D, O0 ]& n2 ~, F

  p! ^" r7 M8 o7 \tvb now,tvbnow,bttvbC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?