easy, one minutes i solve the problem5.39.217.77+ g1 I4 U4 Q& Z$ I; g
divide into half, mean 6/ 6
5 Y0 ^' k; h$ N5 c% G2 g7 |$ H! Ptvb now,tvbnow,bttvbtake the heavier 6 ping pong
8 a) H5 {$ K( X& c* L3 r公仔箱論壇divide into 3/3, take the heavier 3/ l, p# D2 w! N& T' d
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 |