first divide it into 3 groups... 4 for each group...
# p; D8 {& B8 K- p, w% zden 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...
. ]; @+ u/ g, uden... left 4 balls...tvb now,tvbnow,bttvb% B( I/ k# H9 q ]8 ?; j: u
when u use tat 3 groups to test... u oredi know it is heavier or not...
; I( ~4 o6 ~" p2 _; ]so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
8 n6 B% g, ^ |' H. ~) p4 N/ m3 {, J/ 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...公仔箱論壇1 u p" h1 X0 Q2 \
den u juz nit 2 test the last 2 balls...
% a X) C5 |/ [same for now... take the heavier or lighter 1... |