easy, one minutes i solve the problem$ r* Z7 X! q, h {, c0 \, q$ w
divide into half, mean 6/ 65.39.217.77:8898! c& P$ m- J5 G# m
take the heavier 6 ping pong0 W8 y2 l# w; Z/ y( _
divide into 3/3, take the heavier 3
. X: V0 c" `( r1 ^3 S4 e" j5 etake 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 |