1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
* ~4 S) D, G$ R; S* R8 w$ t2 y2 spilt the heavier side ping pongs in half and weight against each othertvb now,tvbnow,bttvb) S5 f" L( u# A* z4 U
3 weiht either ping pongs one on one then you will know which is the heavy one. |