i found the ans in 30 mins but dont know correct or not?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。) K$ R: g* K( _$ C
ans is too long! but concepts are something like that:公仔箱論壇% l# {1 V9 y- I' J& U) n
seprate 4 groups 3 balls in one group! www3.tvboxnow.com4 d* I. H$ T5 n1 n, N( C( B
the important part is the 2nd times which need to find out the fake ball is heavier or lighter by use the normal ball that u find at the first time!
5 c# B1 A, _7 u; Dwww3.tvboxnow.comthe last part is 1ball vs 1ball! something like that |