There is 12 balls.. divide them into piles of 4
! X/ D' p( M* X+ |so 3 groups for 4..name is A,B,C
5 v" Z( X' Q( A7 J; y5 ros.tvboxnow.comcase 1: os.tvboxnow.com2 m; d+ v2 O+ U. R2 h) w
measure A -- B
j& Y# e# L: _, l8 [A or B is heavier tvb now,tvbnow,bttvb. _; V1 l: C* h7 }- R
divide that group into 2 by 2
2 l; h) O% q: [4 L$ m4 XTVBNOW 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
W" L- g1 X' O; r5 ~公仔箱論壇os.tvboxnow.com$ r* W& o: X& w2 w
case 2:$ P( x' w: F4 ^0 ^) {
A and B is the same.. therefore C has the heavier ball& f# t7 ?- \; ^0 ^7 d1 C$ g! |
divide C into 2 by 2; `3 J7 y9 ?7 ~$ U4 R" N
then divide heavier group into 1 by 1.., k) N; b! `% {& |2 A. P( t
9 U% z5 j. j( z7 b) w, Q' c
got it in 30 seconds.. not so hard -.-' |
發表於 2006-12-8 01:06 PM
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