1 weight 6 ping pongs with another 6 ping pongs. see which side is heavier
+ O- h2 M4 \! p5 ^$ N5.39.217.77:88982 spilt the heavier side ping pongs in half and weight against each other
2 c1 s# k' Y3 n# e R: ]8 L. A8 B3 weiht either ping pongs one on one then you will know which is the heavy one. |
發表於 2008-11-23 01:01 PM
| 