38 cities were researched to determine whether they had a professional sports​ team, a​ symphony, or a​ children's museum. Of these​ cities, 20 had a professional sports​ team, 20 had a​ symphony, 13 had a​ children's museum, 13 had a professional sports team and a​ symphony, 6 had a professional sports team and a​ children's museum, 9 had a symphony and a​ children's museum, and 4 had all three activities. Complete parts ​a) through ​e) below.

How many of the cities surveyed had only a professional sports​ team?
How many of the cities surveyed had only a professional sports​ team?
​How many of the cities surveyed had a professional sports team or a​ symphony?
​How many of the cities surveyed had a professional sports team or a​ symphony, but not a​ children's museum?
​How many of the cities surveyed had exactly two of the​ activities?