How many people in total were surveyed?
How many people are only vegetarians?
How many people are only non-vegetarians?
How many students neither play football nor basketball?
How many students play football but not basketball?
How many students play basketball but not football?
How many students play at least one of the two sports?
How many students play only one of the two sports i.e. either football or basketball?
What is the ratio of the number of students who play exactly one of the two sports to the number of students who play none of the two sports?
How many people like only one of the two colours i.e. either red or blue?
How many people like red and green colour but not blue?
How many people like exactly two colours?
How many people like blue and green colours?
How many people do not like Blue colour?
How many people like both red and green colour but not blue colour?
