i find one solution that is similar 4 G. j+ _3 P! e& N1 P5 S& Sbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....公仔箱論壇2 Y2 P1 x7 A# Y" O: c2 q9 L
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...