1. divide 6 and 6, both sides will not equal% @& l7 c. l7 ?6 [6 j& V1 ?' s
2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇! P6 k$ o& p7 X) S/ B
3. take any 2 and weigh themtvb now,tvbnow,bttvb- {/ o( o2 A) W/ n0 D4 D. J0 S
if they equal, the one left is the ball.