1. divide 6 and 6, both sides will not equal/ t5 V: b: r" n' `* q
2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇' r2 a" ^% h$ R2 H6 O
3. take any 2 and weigh them $ T# ^& G# x- A5.39.217.77:8898if they equal, the one left is the ball.