gensy850711

first divide it into 3 groups... 4 for each group...4 Y9 C0 U/ Y- L" b8 L6 j7 q& `
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...+ P3 P( n) y  U. V% \+ ^
den... left 4 balls...
- i. {" Z0 Y- ?, q( k! dwhen u use tat 3 groups to test... u oredi know it is heavier or not...( e( Q* ^8 d; [/ j! R: H" a
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
8 _1 U, |$ p  e# t公仔箱論壇take the heavier or lighter 1... throw away tat 2 normal ball...3 i: k% L) @/ ]+ E! k
den u juz nit 2 test the last 2 balls...
0 a4 p# l9 ^' F8 e. OTVBNOW 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。same for now... take the heavier or lighter 1...