i found the ans in 30 mins but dont know correct or not?
@' Q9 c, t6 h; D( n6 RTVBNOW 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。ans is too long! but concepts are something like that:
" @' W! l# L' Q" F$ v3 V4 X( G5.39.217.77seprate 4 groups 3 balls in one group! z3 `& V7 }/ w9 c7 m7 ]7 H* f1 T$ H# p" z
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!
# f/ O* l9 w/ b. d Vtvb now,tvbnow,bttvbthe last part is 1ball vs 1ball! something like that |