i find one solution that is similar0 T! I& g5 }9 a: G. ~* F$ s: Y& Y
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....os.tvboxnow.com S8 |7 `! W& T1 ~: k
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...