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發表於 2013-2-10 10:53 PM
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C knows the answer by deducing D is not yelling out the answer.
q0 O0 B0 v$ \' W+ d# I" c6 }That means D is not sure the answer by seeing one white and one black.5.39.217.76* [- b5 t* d4 c) x4 K7 i0 U; i
C saw B is wearing the white, hence he is wearing the black |
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