first divide it into 3 groups... 4 for each group...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。& Y; z+ d2 V6 f9 e& J& }% d" 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...: ^; F5 |5 A# H/ J( O: Z$ ]
den... left 4 balls...+ ~- A- O0 o9 Y' {" R+ j
when u use tat 3 groups to test... u oredi know it is heavier or not...tvb now,tvbnow,bttvb/ a- @+ C8 ?% [2 J
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
5 l- [0 ~9 O- L( N: Atvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...( U+ l, g+ f6 M: q
den u juz nit 2 test the last 2 balls...% U0 V. s# p0 k% M) c
same for now... take the heavier or lighter 1... |