i find one solution that is similar $ s" m' |6 o$ r: o t0 f/ U2 Nbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... , U- R) K3 ^5 D6 S9 d! U- h- W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...