gensy850711

first divide it into 3 groups... 4 for each group...
6 x; g6 W( O1 N& n- f& \tvb 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...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。. Z! d4 Q2 L6 Y4 h
den... left 4 balls...
7 w) D6 T! {8 v% ?- O! i! d5.39.217.77when u use tat 3 groups to test... u oredi know it is heavier or not...+ A" j- }+ K- Q! ?+ c7 A7 [
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...  g3 w- y7 v' G1 H( d
take the heavier or lighter 1... throw away tat 2 normal ball...
/ l' f3 q+ m( |den u juz nit 2 test the last 2 balls...
* f% O! k- O; o. n& }- ^$ |3 bsame for now... take the heavier or lighter 1...