first divide it into 3 groups... 4 for each group...公仔箱論壇5 m2 N v: q- P! d
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...tvb now,tvbnow,bttvb% U/ r: ]" a" U, L9 l. s; i
den... left 4 balls...5.39.217.772 O+ G, n( ^! U5 B Z0 O3 y6 E
when u use tat 3 groups to test... u oredi know it is heavier or not...5.39.217.77% t# G1 J- N5 n U7 D5 b7 A
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
2 m) `& d, v4 nTVBNOW 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。take the heavier or lighter 1... throw away tat 2 normal ball...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。) Y( p3 c( r: R; W) m2 M
den u juz nit 2 test the last 2 balls...tvb now,tvbnow,bttvb: N+ |! R5 h9 y8 L1 N8 l/ L
same for now... take the heavier or lighter 1... |