first divide it into 3 groups... 4 for each group...www1.tvboxnow.com$ N7 k8 C! p# r7 t( w' D- \ F3 N) B
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...
0 }% `+ a8 p$ B7 z& B7 V9 ?( K3 Otvb now,tvbnow,bttvbden... left 4 balls...
" Z7 b3 ?6 ~7 A# z公仔箱論壇when u use tat 3 groups to test... u oredi know it is heavier or not...
- h, R/ f/ T* ]8 I. @so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
, E; r4 r7 j% \- F. n% Q公仔箱論壇take the heavier or lighter 1... throw away tat 2 normal ball...( ^. y9 x# P- {" s; G
den u juz nit 2 test the last 2 balls...
$ I' K; @- p) \4 w: U, {6 U+ Osame for now... take the heavier or lighter 1... |