take 4 balls as a group, 3 groups - A B C4 }4 i4 i% d* x: [% q- a) G
weigh A & B (ex. B heavier)7 {6 j/ s1 {) G6 x
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。0 j! K: R: r7 A
to find which group has the weight difference and find out is it (A is lighter)5.39.217.76) {2 l% ~/ e: ^
heavier or lighter公仔箱論壇5 e8 d! g5 a3 ^: Y$ ^
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)5 A {3 p' \/ I
measure E vs F to find which 1 is lighter.... |