i found the ans in 30 mins but dont know correct or not?1 P( I- ?! O1 h% Z
ans is too long! but concepts are something like that:tvb now,tvbnow,bttvb0 q$ m5 F/ E$ Y' E+ q1 N) q
seprate 4 groups 3 balls in one group! 3 I6 q; Z$ V( k. k; l/ W
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!
, l" J9 H; _/ l2 o) I) B* `公仔箱論壇the last part is 1ball vs 1ball! something like that |