easy, one minutes i solve the problem2 k* u0 X% h2 n1 O( W! u& p
divide into half, mean 6/ 6& q- {( f8 S5 [2 |$ i
take the heavier 6 ping pong
/ v" _( q! ]7 \5 Q6 z4 Gdivide into 3/3, take the heavier 3
. O; J' U& g9 |; T8 J3 l公仔箱論壇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 |