i found the ans in 30 mins but dont know correct or not?" y6 C7 _3 ]/ i$ @# U; X% {
ans is too long! but concepts are something like that:; @8 }( o, n, u% R/ s
seprate 4 groups 3 balls in one group!
A* q, t& I) k: N5 ntvb 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!
% f5 y% R- q- t" Z3 p; M: uthe last part is 1ball vs 1ball! something like that |