i found the ans in 30 mins but dont know correct or not?
+ }5 ~# [+ }! o$ m5 X, Ktvb now,tvbnow,bttvbans is too long! but concepts are something like that:
2 X4 v+ h3 Z* Bseprate 4 groups 3 balls in one group! 公仔箱論壇9 A0 `' _6 p) I7 p7 n3 H! Y
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!, \0 n3 v3 m$ `. ^
the last part is 1ball vs 1ball! something like that |