wingonwong

take out 10 balls and 5 in each side
! D  L, J' ^1 i. c# P. yif both side balance mean the other 2 balls one of them must be the heavy one then just take them to weight will find out which one is heavier.
4 c' Q' [1 z2 O公仔箱論壇
' @) f7 r+ Y- F& I" Q  b公仔箱論壇if the heavy ball is inside the 10 balls, take out 4 balls from the heavier side which had 5 balls to weight 2 balls in each side.
5 e( R4 J0 I4 j5.39.217.77if both side balance, which mean the one left is heavy one if not, just take the heavier side to weight will find out which one is the heaviest one.
1 @  I- o; V+ \4 }  w$ mtvb now,tvbnow,bttvb
* X0 G( ]$ X. U; j( F公仔箱論壇used less then 1 min to find out the answer....