easy, one minutes i solve the problem
6 E7 b1 T+ r+ a; x z; P6 M0 ^divide into half, mean 6/ 6
% { g8 d* F6 itake the heavier 6 ping pong
3 L1 t9 V* J9 t8 {6 v" T' R$ V( bdivide into 3/3, take the heavier 3
: F2 a* F0 }) ^$ Z) H' U4 w9 [$ [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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