easy, one minutes i solve the problem5.39.217.77:8898: N7 R) _7 h0 s* t% E3 d& n! K
divide into half, mean 6/ 6
' Z/ q# l; F; P/ Y$ gtvb now,tvbnow,bttvbtake the heavier 6 ping pong
/ F0 I9 E; x& E% o1 W公仔箱論壇divide into 3/3, take the heavier 3公仔箱論壇. o. j6 ?4 o0 R- c7 I
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 |