What is the total number of students from all the colleges together in the year 2005?
What is the total number of students studying in all colleges together?
The number of students in college P in the year 2008 forms approximately what per cent of the total number of students in that college from all the years together?
What was the difference between the total number of students in all the schools together in the year 2003 and number of students in School B in the year 2005?