easy, one minutes i solve the problem) |- d& O7 D% x" B
divide into half, mean 6/ 6公仔箱論壇: p' J# _# h# Y- |6 {9 J5 B; W
take the heavier 6 ping pong& T! ^% C, o. e6 e% v3 N8 d% M
divide into 3/3, take the heavier 34 O+ a; S1 ~3 S2 s6 g
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 |