C knows the answer by deducing D is not yelling out the answer.; k$ |) _& b' w) I1 J3 l0 F& n, \9 l
That means D is not sure the answer by seeing one white and one black." }! |% E" L( ^& @4 O; }% c" y
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
| 
好難哦~~
