take 4 balls as a group, 3 groups - A B C
2 G1 q' y+ O3 s tweigh A & B (ex. B heavier)5.39.217.766 B1 T. r7 `% C$ a) K* K
then weigh B & C (B & C same weight)公仔箱論壇5 ~! ?+ ?" ^- d8 L# W
to find which group has the weight difference and find out is it (A is lighter)
" a: y1 r5 \2 C( J5 |heavier or lighter5.39.217.76* S Z0 z' f5 [; S7 f7 K& |
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇( ^1 r, a/ ^( M3 _, N
measure E vs F to find which 1 is lighter.... |