Divide 3 groups first.
6 \/ t* C, A$ f1 Etvb now,tvbnow,bttvbi.e. 4 x 4 x 4.
! x" _4 J7 X# i# q7 |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。Weight any 2 groups [1st]公仔箱論壇; ~8 `& |; N: t a0 d6 L8 {
then you will know the heavier ball in which group.公仔箱論壇5 E4 m$ F3 d' m, u) ^9 w
Weight any 2 balls in that group [2nd]
' F* }1 K" ^) P8 q7 cthen you will know the heavier ball in which 2 balls.5.39.217.77:88988 W' q d# E% j; R# j# g; P4 p
Repeat again in remainders [3rd]; o; r. G# S) x' C( I
Got the heavier ball. |