easy, one minutes i solve the problem
' F. \+ I% `/ P. [) }% L6 K7 Sdivide into half, mean 6/ 6公仔箱論壇2 B* I7 k6 K+ o8 [8 T5 x
take the heavier 6 ping pong
3 ~' k C0 H" `; s5 [divide into 3/3, take the heavier 3* g+ ]/ U0 S8 @8 T5 e- P
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 |