easy, one minutes i solve the problem
5 L" G% l; V. B( E$ Adivide into half, mean 6/ 6
1 m2 n# {& j- c6 n' b公仔箱論壇take the heavier 6 ping pong4 z6 O# d% q) l g
divide into 3/3, take the heavier 35.39.217.77& M& A( z' ?3 \ D, H; S0 U# Z' Q% S
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 |