first divide it into 3 groups... 4 for each group...
( D/ q( W( R. F7 u. E! i- 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...
- Y9 A: k) l7 h4 f/ Otvb now,tvbnow,bttvbden... left 4 balls...9 V" g, Q( ?. L. S* @0 j
when u use tat 3 groups to test... u oredi know it is heavier or not...tvb now,tvbnow,bttvb/ |5 s/ z" J% H7 u# Y% y
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
3 F. ~, u6 `. m1 q2 I: @. t公仔箱論壇take the heavier or lighter 1... throw away tat 2 normal ball...
! t1 m- B: N9 N2 e: E& H" pTVBNOW 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 u juz nit 2 test the last 2 balls...5 y1 g2 Q0 y; E- {2 n* J, t3 @
same for now... take the heavier or lighter 1... |