take 4 balls as a group, 3 groups - A B C公仔箱論壇9 P- G8 d3 M3 v# ~& U
weigh A & B (ex. B heavier)
4 w* d1 T5 I' {2 D2 {2 q5.39.217.77:8898then weigh B & C (B & C same weight)6 i( U- }/ k1 a
to find which group has the weight difference and find out is it (A is lighter)公仔箱論壇; w* s! \. X( d! h: X. n) w
heavier or lighter" m/ y2 a% x/ m" O* s
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
( S6 ?2 u$ Q0 T0 pmeasure E vs F to find which 1 is lighter.... |