1. 1st divide to half take the heavier out公仔箱論壇& K6 Y% T% q; Y, g2 W1 E! |
2. 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)tvb now,tvbnow,bttvb) b) X3 p& T0 t6 [
3. Same method if is not equal on 2nd try.