easy, one minutes i solve the problem$ S; \0 o1 {0 I$ H8 h" G
divide into half, mean 6/ 6
) d4 c; p* N5 V8 y( Z& [take the heavier 6 ping pong5 N8 P7 @, a' `6 T9 U
divide into 3/3, take the heavier 34 ^+ U- R' o4 | S+ ?
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 |