i find one solution that is similar0 A# D1 x! m9 Q. v% ~! a6 E1 q
but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... 7 Y# L5 L, s' b! Q# | @( ]3 k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...