1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier" C' Z+ B9 Y2 Z& ?
2 spilt the heavier side ping pongs in half and weight against each othertvb now,tvbnow,bttvb8 m% E; P, z8 c( i0 S0 E& q
3 weiht either ping pongs one on one then you will know which is the heavy one. |