1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
! G4 j% O6 r0 j: _4 Jtvb now,tvbnow,bttvb2 spilt the heavier side ping pongs in half and weight against each other
: |$ ?- z C/ w" K, W3 weiht either ping pongs one on one then you will know which is the heavy one. |