dustking

i found the ans in 30 mins but dont know correct or not?5.39.217.76$ [- b! U& @! m2 x
ans is too long! but concepts are something like that:公仔箱論壇# S3 D( L: g; G+ |* _: l
seprate 4 groups 3 balls in one group! * X5 l+ b: f5 h6 F0 \
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!
( ]; s' A' W" s) ~6 X% X2 pTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。the last part is 1ball vs 1ball! something like that