i found the ans in 30 mins but dont know correct or not?tvb now,tvbnow,bttvb$ Q7 L. W% `. w' @
ans is too long! but concepts are something like that:
" E/ ?1 D; Q& D7 K) w5.39.217.77:8898seprate 4 groups 3 balls in one group! tvb now,tvbnow,bttvb% T8 y" T! N* W, x' I3 S4 y2 O' D2 n
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!; J' Y8 c3 W9 ]' m* s
the last part is 1ball vs 1ball! something like that |