this is too easy!!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。3 l! G' G: | k) m! i9 `% b
$ e. R& d; F$ l1. put 6 at each side.. take the one side which is heavier
1 m. k/ z0 U r, Q; L8 etvb now,tvbnow,bttvb2. put 3 at each side.. also take the heavier sideTVBNOW 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。9 ]! s! R' U/ }2 S6 H3 f$ `. H) l
3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball.. |
發表於 2009-1-7 05:31 AM
| 
