thleong

each side put 6 ping pong.
" w! A4 x% B0 ~: ]' UThen select the side of 6 ping pong which is heavier and measure again with 3 + 3! A' H* Y/ K5 N  y1 Y9 W  H0 _
Then select the side of 3 ping pong which is heavier.9 @2 E$ r/ n1 h$ Z8 b, q) e
After tat use these 3 ping pong , put 1 on each side. If equal then the 3rd ping pong is the 1.公仔箱論壇% r$ l7 }8 ^1 f, Y- I8 x7 @% N
If one side is heavier means the heavier side ping pong is the one