i found the ans in 30 mins but dont know correct or not?
* B. I9 B, n6 D. ^5 T$ J公仔箱論壇ans is too long! but concepts are something like that:
& p# h$ Y! H9 Z/ {tvb now,tvbnow,bttvbseprate 4 groups 3 balls in one group! 公仔箱論壇% |9 \$ g" n; s
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!5 W5 D- y, ]: v
the last part is 1ball vs 1ball! something like that |