i found the ans in 30 mins but dont know correct or not?
, U; ^6 [, N8 L, A& |ans is too long! but concepts are something like that:
5 x0 Y6 Y0 p: s `. N9 q+ Iseprate 4 groups 3 balls in one group!
3 n, ^, m) |( ntvb now,tvbnow,bttvbthe 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!公仔箱論壇' c" l9 h1 e5 A! b+ c0 n
the last part is 1ball vs 1ball! something like that |