take 4 balls as a group, 3 groups - A B C
R# E; V+ W: I& [% f# l& i4 k5.39.217.76weigh A & B (ex. B heavier)
2 O& h& ~8 B7 Y6 g4 J2 j公仔箱論壇then weigh B & C (B & C same weight)
# f. a: }$ k* _# ?公仔箱論壇to find which group has the weight difference and find out is it (A is lighter)
; X4 K& g5 E8 ^ B; J1 G' y. jheavier or lighter5.39.217.763 X3 u3 I5 P$ n c' `4 ~+ ~8 h2 z
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter); h. Q; M/ ?# T6 `/ E* E
measure E vs F to find which 1 is lighter.... |