take 4 balls as a group, 3 groups - A B C公仔箱論壇7 G X( O9 o9 l
weigh A & B (ex. B heavier)5.39.217.77, Q8 \& ]1 b, E- t
then weigh B & C (B & C same weight)
7 \+ ~/ ^) B; W$ G5.39.217.77to find which group has the weight difference and find out is it (A is lighter); y; U1 E; o( T" m- i+ R9 z& k
heavier or lightertvb now,tvbnow,bttvb8 Q% u) c' w- T: O6 l6 E0 y
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
6 P+ p0 h) [5 q5.39.217.77measure E vs F to find which 1 is lighter.... |