first divide it into 3 groups... 4 for each group...公仔箱論壇( w+ K/ w/ f0 ~4 Z4 H7 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...
# X9 |, c5 j4 C7 zden... left 4 balls...3 Q- |- e6 g8 h) W
when u use tat 3 groups to test... u oredi know it is heavier or not...
0 G6 L# y2 g$ G$ x& B/ g5.39.217.77so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...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。+ _* a! }' V+ e$ x+ r; H U$ ~
take the heavier or lighter 1... throw away tat 2 normal ball...
- J+ O- N. O- I) C5 ~! x2 @, {tvb now,tvbnow,bttvbden u juz nit 2 test the last 2 balls...
$ b/ }4 ^* Q% j5 Ftvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1... |