1. divide 6 and 6, both sides will not equal公仔箱論壇5 X9 \$ c8 F) n! [
2. take any side of the 6, divide then 3 and 3, again both sides will not equal) L7 U( c6 e* v# d: ~8 H, B8 X
3. take any 2 and weigh them 3 c) n" O8 X, N* T8 f7 T% L. F公仔箱論壇if they equal, the one left is the ball.