i found the ans in 30 mins but dont know correct or not?
# j- H: f/ O: S; C8 w2 P& d. ~& P公仔箱論壇ans is too long! but concepts are something like that:
( s0 ?3 t7 Z# a! f" }3 }5 Mtvb now,tvbnow,bttvbseprate 4 groups 3 balls in one group!
5 a- i# B9 e3 W. v$ U- mtvb 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!
2 S0 [1 r% l+ K/ Xtvb now,tvbnow,bttvbthe last part is 1ball vs 1ball! something like that |