1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
6 f, A/ P/ L, N2 f( ]" F* Ntvb now,tvbnow,bttvb2 spilt the heavier side ping pongs in half and weight against each other
8 L& M8 h& _; h: L公仔箱論壇3 weiht either ping pongs one on one then you will know which is the heavy one. |