i found the ans in 30 mins but dont know correct or not?tvb now,tvbnow,bttvb1 Z7 v! B5 S) N8 S. ]
ans is too long! but concepts are something like that:
" S% \# @7 L) P2 x P, m公仔箱論壇seprate 4 groups 3 balls in one group! ( | [9 U( b$ n
the important part is the 2nd times which need to find out the fake ball is heavier or lighter by use the normal ball that u find at the first time!www2.tvboxnow.com( b9 r- x; Y6 F# t
the last part is 1ball vs 1ball! something like that |