i found the ans in 30 mins but dont know correct or not?www2.tvboxnow.com% G1 l& }' A, {
ans is too long! but concepts are something like that:8 j* Z, `0 g7 Q$ y
seprate 4 groups 3 balls in one group! 公仔箱論壇. G( G: `( p$ G4 b# S, }3 x/ \6 T% M
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!
! x4 D! i7 A: L L, `tvb now,tvbnow,bttvbthe last part is 1ball vs 1ball! something like that |