1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
3 h, ]" p( z n+ X# rtvb now,tvbnow,bttvb2 spilt the heavier side ping pongs in half and weight against each other& Y" F. W( `$ j ~/ k- O
3 weiht either ping pongs one on one then you will know which is the heavy one. |