Divide 3 groups first.公仔箱論壇- a, x4 |* l* d/ s# P. Q
i.e. 4 x 4 x 4.
6 t) s3 W, \# P2 B- S! stvb now,tvbnow,bttvbWeight any 2 groups [1st]os.tvboxnow.com& j; F! {0 w+ L
then you will know the heavier ball in which group.
5 ]) \+ N( n) n" D0 Z; l5 h8 yos.tvboxnow.comWeight any 2 balls in that group [2nd]
8 F& t F3 D, Y: e. h: wtvb now,tvbnow,bttvbthen you will know the heavier ball in which 2 balls.
( L4 y. j: N, `7 s \Repeat again in remainders [3rd]os.tvboxnow.com7 @$ N" `' h9 C+ S" P( J& v
Got the heavier ball. |