first divide it into 3 groups... 4 for each group...
! p+ H: y/ i- ~( g8 s公仔箱論壇den use 2 groups to test... if the weight is same... den throw away these 2 groups.. if not... use another 1 group to test with tat 2 groups... throw away the same weight groups...
5 V* L. V k/ K5 d0 n- b2 k5 _. [den... left 4 balls...
6 j* G5 }7 n/ T5.39.217.77when u use tat 3 groups to test... u oredi know it is heavier or not...
+ k {. p9 U. H* U+ R( \6 T9 z Rso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...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。/ A' I4 ^6 F Z w$ y4 G4 n {
take the heavier or lighter 1... throw away tat 2 normal ball...tvb now,tvbnow,bttvb" S/ |& u! C( g4 N
den u juz nit 2 test the last 2 balls...
. {, z% G" s6 Y9 \tvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1... |