C knows the answer by deducing D is not yelling out the answer.5.39.217.77:8898% M8 n8 l5 o3 |2 ?; ^4 t
That means D is not sure the answer by seeing one white and one black.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。1 ?+ `% L. O5 r4 Q2 o+ S/ \
C saw B is wearing the white, hence he is wearing the black
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.
發表於 2013-2-10 08:55 PM
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好難哦~~
