Divide 3 groups first.5.39.217.77:8898! h6 O: l t* L" d4 L
i.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。2 E+ V! U" W+ t0 X6 I4 x; Z/ K: Y
Weight any 2 groups [1st]
+ d4 ^: U, ~( B5.39.217.77:8898then you will know the heavier ball in which group.3 i. v7 A& g" h4 F) }% G& k
Weight any 2 balls in that group [2nd]公仔箱論壇7 \1 N: n8 T1 T4 X) f! T
then you will know the heavier ball in which 2 balls.公仔箱論壇9 l, X' s7 m7 }% n& M
Repeat again in remainders [3rd]
& w" J2 O4 R5 |6 d$ @5.39.217.77:8898Got the heavier ball. |