1. put 6 on each side of the scale to get the heavier side 9 t' D8 K5 J& Y) s) l. m5 p5 i
2. take off any two balls from the more heavier side (among 6 balls) and put 2 on each side of the scale to weigh and get the heavier side(which are 2 balls) {if at this moment the scale is balanced, then weigh the 2 balls which we took out before} {if at this moment the scale is not balanced, then go 3}
" P2 X0 ]' |7 A+ |' @公仔箱論壇3. put one on each side to weigh and get the heavier one. |