1. divide 6 and 6, both sides will not equaltvb now,tvbnow,bttvb6 K0 J' w( H3 b- i( _
2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇; @4 E* u$ m; k: s, d
3. take any 2 and weigh them 2 p* `0 n9 \% w; T Dif they equal, the one left is the ball.