easy, one minutes i solve the problemtvb now,tvbnow,bttvb* c; [' N/ J! z9 t: W5 K( _
divide into half, mean 6/ 6
2 Y) b- s3 I5 d) G) @! }7 k, ^- ztake the heavier 6 ping pong
$ O% Y5 n5 b/ ntvb now,tvbnow,bttvbdivide into 3/3, take the heavier 3' n" M+ M- H+ G0 J4 l' }4 A" r& U
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
| 