There is 12 balls.. divide them into piles of 4
& D9 G8 A$ y1 e7 K* yso 3 groups for 4..name is A,B,C
, T) `& y6 i- \0 h: }# pTVBNOW 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。case 1: 公仔箱論壇, {+ h8 N' \: r4 A: d6 c3 X$ R' Q
measure A -- B tvb now,tvbnow,bttvb6 @' K1 Z8 \3 v
A or B is heavier tvb now,tvbnow,bttvb1 e% F# X7 `! E0 c/ m% N
divide that group into 2 by 25.39.217.76+ G1 K) Z0 A/ n, `, k; `
then divide heavier group into 1 by 15.39.217.76; }8 i6 J4 q6 T- J" i. _
- E2 K& q- E. J% p- f
case 2:5.39.217.761 Q" v! v$ h' }3 e* c
A and B is the same.. therefore C has the heavier ball
3 P2 S: b( v0 l5 C* stvb now,tvbnow,bttvbdivide C into 2 by 2公仔箱論壇; w" ~& L0 W7 c7 k& {5 M, `) k% Z
then divide heavier group into 1 by 1..
6 E% Y! _5 ^0 T" s* 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。tvb now,tvbnow,bttvb7 Z9 ? ~/ h( f6 T3 N" ?, D
got it in 30 seconds.. not so hard -.-' |