Make a Venn Diagram and Cardinality
At a high school with 350 students, all students are asked about what meal options they’ve had for breakfast in the last week, out of pancakes, oatmeal and waffles. Later, various people tell you bits of information about the results, with the information below. From this, between what 2 numbers can we say that the number of people who ate oatmeal and not pancakes or waffles is?
(a) 2 people ate all 3 breakfasts
(b) 30 people ate pancakes and at least 1 other breakfast
(c) 45 people ate at least 2 breakfasts
(d) 10 people ate pancakes and waffles (e) At least 200 people ate exactly 1 breakfast option
(f) 100 people ate pancakes
(g) 100 people ate waffles