1. divide 6 and 6, both sides will not equaltvb now,tvbnow,bttvb5 E3 O" p( G! G2 Q
2. take any side of the 6, divide then 3 and 3, again both sides will not equal $ |8 x6 Q4 c* c$ x$ ]$ X* F5.39.217.763. take any 2 and weigh them公仔箱論壇1 c+ j4 C, ^5 Z$ @9 i. c1 h/ S
if they equal, the one left is the ball.