take 4 balls as a group, 3 groups - A B Cos.tvboxnow.com1 ]# e4 s- s7 P5 n5 N5 u- b
weigh A & B (ex. B heavier)tvb now,tvbnow,bttvb9 c+ Y1 B# y3 H. L: G
then weigh B & C (B & C same weight)- z7 B% ^# K, e
to find which group has the weight difference and find out is it (A is lighter)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。- |' H7 k2 _4 n0 e& M
heavier or lighter
4 n0 A9 W: B! T4 ~then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
/ |0 @$ m' F) R! tmeasure E vs F to find which 1 is lighter.... |