There is 12 balls.. divide them into piles of 4
6 [9 p2 N0 N# |+ a6 tso 3 groups for 4..name is A,B,Cwww2.tvboxnow.com3 v/ n% I9 o/ s) S
case 1:
+ q7 n( N1 K0 p- C) I# p" h3 Z5 a+ ^% hmeasure A -- B * P4 p/ g% {" x& d9 @8 B
A or B is heavier
1 W2 o7 @$ n+ w! Q6 Cwww2.tvboxnow.comdivide that group into 2 by 2! R Q5 T, P& Y8 d5 b8 c& ?) t
then divide heavier group into 1 by 1tvb now,tvbnow,bttvb4 W: t; U6 C, j; L" y l
% c& U( r, r* r/ X d$ ucase 2:2 i! ^* Z% r0 z$ k7 h( C
A and B is the same.. therefore C has the heavier ball
4 @: O, _) z5 D+ ?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。divide C into 2 by 2
! G5 p" l0 L0 s7 s% Stvb now,tvbnow,bttvbthen divide heavier group into 1 by 1..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。: V/ n1 V9 R: I3 ]/ P
- h _' H. h) z4 B. A7 J' lwww2.tvboxnow.comgot it in 30 seconds.. not so hard -.-' |