take 4 balls as a group, 3 groups - A B C
3 u6 }/ t& ]/ T7 Etvb now,tvbnow,bttvbweigh A & B (ex. B heavier)5.39.217.77:88980 w. S; ~6 B' o7 B6 h# w
then weigh B & C (B & C same weight)& y2 t* M% I/ v( B8 T, j" _# d
to find which group has the weight difference and find out is it (A is lighter); b+ U6 E; y- j2 [
heavier or lighter公仔箱論壇1 x3 ^2 n1 y# c
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
' Y" f8 a2 c; S0 e& M `3 l9 V5.39.217.77:8898measure E vs F to find which 1 is lighter.... |