What is the total number of candidates clearing the entrance exam from States E and F together in the year 2006?

What is the number of candidates not clearing the entrance exam from State A in the year 2007?

In which year did the highest number of candidates clear the entrance exam from State D?

What is the respective ratio of the total number of candidates clearing the entrance exam from State B in the year 2004 to 
those clearing the entrance exam from State C in the same year?

What is the difference(in Rs lakh) between the average salary and the lowest salary?

Out of a total 550 students,how many students did not prefer Maths or Economics?

Break-up of students having preference for each subject