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Divide 3 groups first.公仔箱論壇# d+ y; o2 d, d( t2 x" |6 S
i.e. 4 x 4 x 4.tvb now,tvbnow,bttvb6 Q+ Z* Q( L& B: s8 x& R
Weight any 2 groups [1st]5.39.217.77:8898" H! K. T: B& R8 X: v
then you will know the heavier ball in which group.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. o* X$ Q! p* s/ |. P
Weight any 2 balls in that group [2nd]
" B( I% q; V9 T5 A* m  athen you will know the heavier ball in which 2 balls.
( r' h; p' o* V" L5 Y! q6 kTVBNOW 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。Repeat again in remainders [3rd]/ j' j) m: g+ {+ {+ _3 Y  J
Got the heavier ball.