divde the 12 balls into 3 sets of 4.
8 n3 Y4 S' [8 gtvb now,tvbnow,bttvbweight any 2 sets.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。$ s& x5 H5 X I: ]! U# w/ n
if the 2 sets are equal, then you know the heavy one is in the third
7 r! H! q6 k6 xtvb now,tvbnow,bttvbif one of the 2 is heavier, then the heavy one is in that set
' p1 i; L. `1 C2 x公仔箱論壇then divide the 4 balls into 2.% \" s: g: P, e# L6 E9 M
weigh them
7 Z; c. S- R1 F& E& w公仔箱論壇and divide the heavier into 1公仔箱論壇" E; X" s2 K3 _( V$ T
and weight them.9 _5 X$ e ~9 Y$ ?% q
3 x weighing and get the ans. 公仔箱論壇9 P4 U- X8 C9 X0 [
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發表於 2007-3-3 05:06 PM
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