There is 12 balls.. divide them into piles of 4
1 q* x: l- N1 S- L公仔箱論壇so 3 groups for 4..name is A,B,C公仔箱論壇: u7 g* @& m0 d7 R$ V
case 1: tvb now,tvbnow,bttvb1 `: ^0 t; ~5 O* X I; Y# N
measure A -- B 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。7 I6 T+ s- k9 g( i. a* w0 ^
A or B is heavier
/ q L+ u; g" z公仔箱論壇divide that group into 2 by 2
, j- q/ x0 }( E$ j0 S& |% G5 G" [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。then divide heavier group into 1 by 1
+ C0 ^ }4 r2 P1 R$ o; N5.39.217.775.39.217.772 t3 J+ t% ^# t9 A: E( b F
case 2:& ]2 m( b7 R R- A( p4 e& T
A and B is the same.. therefore C has the heavier ball
+ { x% [4 i) S3 ^: g公仔箱論壇divide C into 2 by 2, k4 C I0 w, j+ b
then divide heavier group into 1 by 1..tvb now,tvbnow,bttvb5 r: ~! q+ e c% K4 U
( z0 W ]) q+ e! j9 Q ggot it in 30 seconds.. not so hard -.-' |