new venn diagram question is seen below ...........

91 cities were surveyed to determine sports teams. 23 had soccer, 21 had rugby, How many had only a soccerteam? 18 had basketball, 12 had soccer and rugby, 11 had soccer and basketball. 11 had rugby and basketball. 6 had all three. How many had soccer and rugby, but not basketball? How many had soccer or rugby? How many had soccer or rugby, but not basketball? How many had exactly two teams