take 4 balls as a group, 3 groups - A B C5.39.217.76% L5 f7 D- P7 i* K& T
weigh A & B (ex. B heavier)5.39.217.76: F; y* J$ i7 ]" Z1 Q
then weigh B & C (B & C same weight)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。9 i/ g3 ^! P( B* ^' j4 j! a
to find which group has the weight difference and find out is it (A is lighter)
2 Y) g! h+ ~4 m5 Z. |heavier or lighter& C. K6 A& v# W3 [. x' ^9 a
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇 X1 N& D; [1 T( T
measure E vs F to find which 1 is lighter.... |