take 4 balls as a group, 3 groups - A B C! Z4 A: N/ K$ r' \
weigh A & B (ex. B heavier)1 p* G# l, J8 f* s
then weigh B & C (B & C same weight)公仔箱論壇 C6 W/ b0 Q7 Q7 ` h( w- l
to find which group has the weight difference and find out is it (A is lighter)) j$ S4 g7 J: N: @9 V: r
heavier or lighter公仔箱論壇! e8 _ ?8 r, C
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
3 k7 C5 k3 x# X5.39.217.77:8898measure E vs F to find which 1 is lighter.... |