The median of the list $$n$$, $$ n+2$$, $$ n+3$$, $$n+5$$, $$n+7$$, $$n+8$$, $$n+11$$, $$n+14$$, $$n+16$$, $$n+19$$ is $$20$$. What is the mean? 
Overseas Competition->Knowledge Point->Counting Modules->Statistics and Probability->Statistical Graphs