A group of people were surveyed about what they like on Pizza
How many like Pepperoni?
How many like Sausage?
How many like Olives and Sausage?
How many like Olives and Pepperoni?
How many like all 3 toppings?
How many dont like Olives?
How many don't like Pepperoni?
How many people like exactly 1 topping?
A group of people were surveyed about what what snow sports they participate in
How many skiers are there?
How many ice-skaters are there?
How many people participate in all 3 snowsports?
How many people Ice skate and snowboard but don't ski?
How many people ski and iceskate but don't snowboard?
How many people ski and snowboard?
How many people participate in exactly 2 snow sports?