i find one solution that is similar " i0 o2 J: O/ n/ K4 I0 U+ e! lbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... 0 c+ T! \( ]. Z; u1 e+ o1 ymaybe 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...