1. divide 6 and 6, both sides will not equal : x2 U% t5 B- C1 D1 P' }7 f公仔箱論壇2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇- c; U0 |; g- I
3. take any 2 and weigh themos.tvboxnow.com2 U4 j' e/ `0 O+ N$ Z) z0 C- X
if they equal, the one left is the ball.