take 4 balls as a group, 3 groups - A B C# D' [: h: r) ^
weigh A & B (ex. B heavier)
4 }" V ^8 a$ y! |; N" P! t5.39.217.76then weigh B & C (B & C same weight)
/ `" H* i2 c( S! D- V. ?公仔箱論壇to find which group has the weight difference and find out is it (A is lighter); @& a w) F# o4 \. R
heavier or lighter
2 t! w& V+ I. O0 r* V6 s4 h' k. P' g h5.39.217.76then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇7 l, C: F u/ }3 @
measure E vs F to find which 1 is lighter.... |