i find one solution that is similar , J! p8 X9 O6 m+ j; j; xbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... / x" m$ f5 I" [+ H* R7 `公仔箱論壇maybe there is a better one, let me see sin
actually this question always have someone asked, the calculation is very complicated, should give a no. of each ball, and first weight it in 6-6, and .... forgot...