easy, one minutes i solve the problem
' b) A3 U* u! u4 Y; G& w公仔箱論壇divide into half, mean 6/ 6
+ B* h/ A7 c4 Ztvb now,tvbnow,bttvbtake the heavier 6 ping pong% V% K1 z2 R: S% }
divide into 3/3, take the heavier 3
. r6 m" r2 j+ g4 m: ^公仔箱論壇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 |