first divide it into 3 groups... 4 for each group...% n7 B# \* f6 y( [# {
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...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。. j( M @7 p3 {" V! z# M
den... left 4 balls...tvb now,tvbnow,bttvb# Z, S) t4 R) O# r' x
when u use tat 3 groups to test... u oredi know it is heavier or not...
' q# P* \, Q5 ^/ D3 xso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
' ?* x: G) m5 [ ^0 `( \take the heavier or lighter 1... throw away tat 2 normal ball...tvb now,tvbnow,bttvb0 z3 |; y9 _/ m
den u juz nit 2 test the last 2 balls...
: \& @( a$ l9 N% w G+ U8 X公仔箱論壇same for now... take the heavier or lighter 1... |