easy, one minutes i solve the problem$ J5 }- _! h- P! L/ J C4 e
divide into half, mean 6/ 6
/ q7 L+ T; t% w, |5.39.217.77:8898take the heavier 6 ping pong4 C7 N; b* }- N( R h
divide into 3/3, take the heavier 3
# J! t! g9 X& p6 @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 04:58 PM
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