take 4 balls as a group, 3 groups - A B C; m$ c$ S g4 Z5 Z
weigh A & B (ex. B heavier)
. B, G8 m3 {) v7 q) q. ] e& D8 ]then weigh B & C (B & C same weight)4 F: m3 k6 Z3 q+ l% A" ^: `
to find which group has the weight difference and find out is it (A is lighter)* m, }9 i& N0 W2 k, N$ }
heavier or lighter公仔箱論壇) y& S! T& i* r) e2 T6 z& }2 T
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
8 U; p. l/ a' b( ]2 |) ctvb now,tvbnow,bttvbmeasure E vs F to find which 1 is lighter.... |