There is 12 balls.. divide them into piles of 42 j, F) n9 ~* ^, B$ J
so 3 groups for 4..name is A,B,C
9 T3 e/ Q, E9 s S8 E公仔箱論壇case 1:
& ` Z) n* M% c# R5.39.217.76measure A -- B tvb now,tvbnow,bttvb$ R1 J1 N! O' ?1 J3 o, X
A or B is heavier 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。: w8 ?0 r8 B+ x6 c6 D, q
divide that group into 2 by 2! n' H- g9 q5 I! e
then divide heavier group into 1 by 1
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case 2:tvb now,tvbnow,bttvb) @, p4 V/ e& X& @
A and B is the same.. therefore C has the heavier ball
" Z4 v n4 ~# [8 q. Vdivide C into 2 by 2
$ ?2 |9 b' u# h: }$ z2 _0 ZTVBNOW 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..
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$ ~% v/ `5 A' p! O$ a) u( Ugot it in 30 seconds.. not so hard -.-' |