1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
9 R$ z1 x* b7 a, L( W$ J2 spilt the heavier side ping pongs in half and weight against each othertvb now,tvbnow,bttvb/ `, L3 |# w E C: l! Z1 D
3 weiht either ping pongs one on one then you will know which is the heavy one. |