kochipai

1. 1st divide to half take the heavier out
- N! `, M$ q* C1 k' S, wtvb now,tvbnow,bttvb2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for)公仔箱論壇; ~+ W" J* ^! Z0 O
3. Same method if is not equal on 2nd try.