first divide it into 3 groups... 4 for each group...
+ S" W$ M' j7 ]* _: u) iTVBNOW 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 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& @* _8 l' f$ ]* T5 T9 P8 x A+ }
den... left 4 balls...5.39.217.761 T/ `9 t& i x# m. z) ]% m
when u use tat 3 groups to test... u oredi know it is heavier or not...
' N- c6 |. E( O9 o; N9 z8 TTVBNOW 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。so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...tvb now,tvbnow,bttvb9 [0 j7 f4 x) {% q) I( q0 E- q
take the heavier or lighter 1... throw away tat 2 normal ball..." b# b. U) `# C, B) U
den u juz nit 2 test the last 2 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。8 H- @& f+ D2 J, W
same for now... take the heavier or lighter 1... |