1. divide 6 and 6, both sides will not equal公仔箱論壇* y; w' D+ m1 ]1 a7 U
2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇! |% n: h1 n: z! ]+ K
3. take any 2 and weigh them 4 ]8 ^8 e. B _, b' y5 e dif they equal, the one left is the ball.