maaaary

1. divide 6 and 6, both sides will not equal
9 f) q! L1 X& k- O$ v- o. J2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇3 J- @0 V/ z$ Y* r3 D0 I
3. take any 2 and weigh them
- B; A( n# [5 j0 hif they equal, the one left is the ball.