take 4 balls as a group, 3 groups - A B C
1 Y ~& g: i, g9 T1 j, J0 ctvb now,tvbnow,bttvbweigh A & B (ex. B heavier)www2.tvboxnow.com' U7 U% c- `$ s- ?4 @
then weigh B & C (B & C same weight)公仔箱論壇) K) q: [# l: _( r
to find which group has the weight difference and find out is it (A is lighter)www2.tvboxnow.com" F4 a* r2 q) f
heavier or lighter
% V$ |- M! k7 N2 u6 ]then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)www2.tvboxnow.com5 ^$ ]5 _, T E( q
measure E vs F to find which 1 is lighter.... |