easy, one minutes i solve the problem% W) K" K' B( r/ d: E* R# y2 f- K
divide into half, mean 6/ 6公仔箱論壇: a' l7 E! E/ ]
take the heavier 6 ping pong
0 E+ @9 Z: ~7 j1 U" Rtvb now,tvbnow,bttvbdivide into 3/3, take the heavier 3
. q0 J2 L/ w, n& _5 O0 H1 d& ntake 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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