well ive heard a riddle like this before, but for some reason i cant remember the answer, so i made up a new one... would this work? they start all 9 black up... the person who sees all black is told to flip them all over, the person who sees all white is told to flip 8 over, the person who sees 8 black is told to flip 7 over...etc... by following that logic, the person who sees 3 white (i think) would know that he is teh final person
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