Question

in a survey of students about favorite sports the results include 22 who like tennis, 25 who like football, 9 who like tennis and football 20 who like football and baseball,6 who like all three sports and 4 who like none of the spots. Please draw a Venn Diagram then answer how many students like only tennis and football. the answer is not 9? How many student like only tennis and baseball? if 3 people only like baseball, then how many people were surveyed??