In a survey of dinner preferences, the number of people eating different foods is represented as follows: 36 people eat only potatoes, 15 eat only eggs, 81 eat only chicken, and 21 eat both potatoes and eggs but not chicken. How many people eat potatoes and eggs for dinner but NOT chicken?

In a Venn diagram representation, rectangle, circle, triangle, and square represent the number of people who have dogs, cats, birds, and fishes as pets respectively. Based on the given region where circle, triangle, and square overlap (excluding rectangle), how many people have cats, birds, and fishes as pets?

Which of the following descriptions best represents the relationship between: Males, Fathers, and Children?