1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
7 H1 U; }; y0 ? K* D- P5.39.217.762 spilt the heavier side ping pongs in half and weight against each other
* ^* H* U, j0 J7 B) {tvb now,tvbnow,bttvb3 weiht either ping pongs one on one then you will know which is the heavy one. |