i find one solution that is similar $ I8 @0 p' Z& f W1 X" \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.... 4 l4 O* v* h" _0 W4 n W" e {3 x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...