Divide 3 groups first.
- L2 S& G& x2 @8 G2 |4 Zi.e. 4 x 4 x 4.
" _# W" l* ]* e7 n! D. }+ STVBNOW 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]
, ~- Q4 ~ o$ M6 f6 ]( V/ |% C$ stvb now,tvbnow,bttvbthen you will know the heavier ball in which group.
% Y8 ~9 z9 \$ x2 YWeight any 2 balls in that group [2nd]www3.tvboxnow.com" S* a/ |& m2 ]' B* [! T% `
then you will know the heavier ball in which 2 balls.3 P/ M; w7 ^5 q5 D: Q0 f( n( }9 `
Repeat again in remainders [3rd]
$ X/ _7 V# c9 J$ }# R1 kGot the heavier ball. |