first divide it into 3 groups... 4 for each group...tvb now,tvbnow,bttvb/ F$ d) A' \3 t7 Q, P
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...
; H' b4 x3 |0 \# G" l; f5 m2 }den... left 4 balls...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 [" Y( [1 h$ n* W3 v3 ?3 C! B5 m+ e( R
when u use tat 3 groups to test... u oredi know it is heavier or not...
9 ?' G. w) |' t) p0 Rtvb now,tvbnow,bttvbso 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。& k- ~* j! }2 v7 e8 _; e
take the heavier or lighter 1... throw away tat 2 normal ball...
# W; o1 f, v5 n1 Q) B公仔箱論壇den u juz nit 2 test the last 2 balls...
' ^" ]' O9 S/ Q! ^, Ksame for now... take the heavier or lighter 1... |