1. divide 6 and 6, both sides will not equal5.39.217.764 Z' i. h8 ]9 W3 q" ^9 q
2. take any side of the 6, divide then 3 and 3, again both sides will not equal * V) U7 ]9 J. ]公仔箱論壇3. take any 2 and weigh themtvb now,tvbnow,bttvb0 @' H. c+ [6 \2 h, Z
if they equal, the one left is the ball.