take 4 balls as a group, 3 groups - A B C% @1 y+ k C) m
weigh A & B (ex. B heavier)
$ V/ n6 S6 s& L3 |9 ptvb now,tvbnow,bttvbthen weigh B & C (B & C same weight)
/ K! m7 J8 Y, x公仔箱論壇to find which group has the weight difference and find out is it (A is lighter)公仔箱論壇1 y5 U7 m! n* `. {$ P' d: ?) k
heavier or lightertvb now,tvbnow,bttvb6 C, B1 h. m0 K/ b0 H' J6 l( O
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
V/ x' W' I- |% Y! `" O6 m$ e5.39.217.76measure E vs F to find which 1 is lighter.... |