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睇睇.. 完全唔識- -
lets try
take 4 balls as a group, 3 groups - A B C8 m1 ?6 J4 }( d# \6 Q0 V3 h* h) g
weigh A & B (ex. B heavier)$ \# Q. ], g' R9 I% v4 s
then weigh B & C (B & C same weight)公仔箱論壇) Q1 H3 ^) F  z" i
to find which group has the weight difference and find out is it (A is lighter)
% F- d, s; V! t3 \4 m+ d& Yheavier or lighter
" Z$ o- E' W; O3 {  D; `  lthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
5 X; i9 P! ?) U' r3 Rtvb now,tvbnow,bttvbmeasure E vs F to find which 1 is lighter....
简单!!
easy
???
is it really tht hard?
thank you for your sharing!
???????????????
唔識
thx
;)) ;))
好難呀....
分成a,b,c三堆,分别为5,5,2三堆,先称a与b,若平衡,则中a中取一个与c中任一个称,就得到结果。若a与b不平衡,假设a略重,重a中随机取3个出来加上c中任一个,b中取3个出来加c中的任一个,若平衡,则a中剩余一个就为异常。若a仍重

哈哈

hv a look
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