Exercise 3 19 D 12 7 1. 3 C F 6 U Fifty people are asked about the pets they keep at home. The Venn Diagram shows the results. Let D={people who have dogs} F = {people who have fish} C= {people who have cats} How many people have a. Dogs b. Dogs and fish? C. Dogs or cats? d. Fish and cats but not dogs? e. Dogs or fish but not cats? f. All three? g. Neither one of the three? TX II VXT.TTI​