1. divide 6 and 6, both sides will not equal " }4 V7 P3 J x& F& @/ Ptvb now,tvbnow,bttvb2. take any side of the 6, divide then 3 and 3, again both sides will not equaltvb now,tvbnow,bttvb7 f5 W; {: @' I3 ~' U
3. take any 2 and weigh them公仔箱論壇4 n v8 o6 H8 K* u( [7 U
if they equal, the one left is the ball.