easy, one minutes i solve the problem
. s' g( V$ l) m# G: a& f5.39.217.77:8898divide into half, mean 6/ 6
2 ]7 t# V% }' [! R+ f1 M# @. ntvb now,tvbnow,bttvbtake the heavier 6 ping pong
, h+ K! d8 y+ }2 {" z% ^: E! |$ `公仔箱論壇divide into 3/3, take the heavier 3
! P7 h- S& }% q* N1 W6 ftake 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 |