easy, one minutes i solve the problem5.39.217.777 z% h4 O7 C* D
divide into half, mean 6/ 6
( U( g ]. Q6 h- r5.39.217.77take the heavier 6 ping pong
) ^ n: a$ N6 t$ I公仔箱論壇divide into 3/3, take the heavier 3. v0 p( L2 r5 J
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 |