easy, one minutes i solve the problem
& m: x: a1 {2 F5.39.217.76divide into half, mean 6/ 65 W6 n9 |$ K( E; u
take the heavier 6 ping pong
; G) X2 b* h% ^6 n# e R, xdivide into 3/3, take the heavier 3公仔箱論壇( P& D: R3 z: O/ J3 Z
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 |
發表於 2009-2-8 08:11 PM
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