easy, one minutes i solve the problem
! a$ U0 R( G' t, W公仔箱論壇divide into half, mean 6/ 6
5 Y* Z* r; x8 H$ X公仔箱論壇take the heavier 6 ping pong: M% x3 T3 a: k* ~+ {
divide into 3/3, take the heavier 3
- @! M; y9 u8 ]/ R2 g" R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 |