first divide it into 3 groups... 4 for each group...
- S: V6 y6 u3 ytvb now,tvbnow,bttvbden 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...
; M0 j% R5 \8 @+ ^tvb now,tvbnow,bttvbden... left 4 balls...
8 o" Y; ]7 J6 d" d3 swhen u use tat 3 groups to test... u oredi know it is heavier or not...
, V& Y. l L+ P2 C$ e8 W4 _so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...0 I y. {$ k8 I* k2 {' a
take the heavier or lighter 1... throw away tat 2 normal ball...
K. v- ?% ~/ R* s/ S: v; HTVBNOW 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...
& I. ^) ^2 q- G1 qtvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1... |