cities were surveyed to determine sports teams. 21

21 had soccer comma

soccer, 20

20 had football comma

football, 13

13 had basketball comma

basketball, 11

11 had soccer

soccer and football comma

football, 7

7 had soccer

soccer and basketball comma

basketball, 8

8 had football

football and basketball.

basketball. 3

3 had all three. How many had only a basketball

basketball team?

nothing

had only a basketball

basketball team.