take 4 balls as a group, 3 groups - A B C
J% x( U: N% z I4 t7 ], Tweigh A & B (ex. B heavier)
8 A" q% y ^. I4 c/ U! r) G公仔箱論壇then weigh B & C (B & C same weight): x- u% c3 ]! X" d T4 @- {, u. }
to find which group has the weight difference and find out is it (A is lighter)
9 g" e: S, D4 k1 s# L% [heavier or lighter8 ^4 ^3 y8 z4 z$ A$ @
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
+ r9 c8 | g* D& P公仔箱論壇measure E vs F to find which 1 is lighter.... |