easy, one minutes i solve the problem
# `- Z6 g2 C" A. g, \% x4 o* otvboxnow.comdivide into half, mean 6/ 6
3 K' f' E/ T( h, y" N; ?tvboxnow.comtake the heavier 6 ping pong
% `; u2 @( q, T/ P3 i- a; {) L! kdivide into 3/3, take the heavier 3tvb now,tvbnow,bttvb: l# x- `7 Z; |. k2 F
take the the other 3 that have the equal weight, switch each to measure, the most important things is labeling the ping pong so that we can recognize |