first divide it into 3 groups... 4 for each group...tvb now,tvbnow,bttvb& Y9 f8 D) z$ t z4 i* @ \ z+ j: m1 l
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...
8 ], `* C l j, a JTVBNOW 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。den... left 4 balls...
, Z2 y2 A3 ? Twhen u use tat 3 groups to test... u oredi know it is heavier or not...; Y( S6 `3 q+ M3 {, y& D" T
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
# J6 y( S$ e% A! |6 Z" KTVBNOW 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...
" n# `" c' N# e& rden u juz nit 2 test the last 2 balls...
) z7 J" {: }5 R, K$ Q8 r. C% Z: Q) gsame for now... take the heavier or lighter 1... |