Divide 3 groups first.
; N. w' P. v8 T( J+ V" m; Rtvb now,tvbnow,bttvbi.e. 4 x 4 x 4.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。9 f ^7 l. j! C8 u3 ?+ v! c
Weight any 2 groups [1st]
4 a% z# U3 v, Q! |6 j: S公仔箱論壇then you will know the heavier ball in which group.
}) v2 U2 I9 gtvb now,tvbnow,bttvbWeight any 2 balls in that group [2nd]* b" u8 J6 l' {6 `7 V2 u
then you will know the heavier ball in which 2 balls.4 A$ S# a$ b$ l/ Q; M
Repeat again in remainders [3rd]; h, z5 S7 N' }) N2 h) D S7 ?$ Q
Got the heavier ball. |