How many students enrolled for mathematics subject only?

How many students enrolled for science subject only?

How many students enrolled for mathematics subject?

How many students enrolled for science subject?

How many students enrolled for both mathematics and science subjects?

How many people do not like Pizza?

How many people do not like Burger?

How many people like exactly one item (including both pizza and burger)?

How many people travel by both car and metro?

How many people travel by both bus and metro only?

How many people travel by bus or car?

How many people travel by bus or car but not by metro?

How many people travel using at least two modes of transport? 

How many people travel using only one mode of transport?

How many people travel using exactly two modes of transport?