each side put 6 ping pong.
% f# _, y# B5 |/ _! x0 y- v6 A4 WThen select the side of 6 ping pong which is heavier and measure again with 3 + 3
z/ N& {$ z! F. FThen select the side of 3 ping pong which is heavier.
* E; b) `( `& ~8 Z: _After tat use these 3 ping pong , put 1 on each side. If equal then the 3rd ping pong is the 1.
3 V* o+ m: H( P! a& uIf one side is heavier means the heavier side ping pong is the one |