i found the ans in 30 mins but dont know correct or not?: }8 I/ c8 \6 S- W
ans is too long! but concepts are something like that:, M1 A# j+ l& j
seprate 4 groups 3 balls in one group!
0 }$ D0 _6 t, h5 K1 Vtvb 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!
, ^9 W4 o5 Y$ H* Sthe last part is 1ball vs 1ball! something like that |