1. divide 6 and 6, both sides will not equal% { w" C+ K4 ]; M. x5 A
2. take any side of the 6, divide then 3 and 3, again both sides will not equal ~: R$ V. Z7 Z8 g: w0 M' _公仔箱論壇3. take any 2 and weigh them 4 e5 z" K% j4 _$ J0 Lif they equal, the one left is the ball.