Puzzle - 1

Puzzles are great mind stimulants. Here is one that was sent to me by Tanmay an engineering student.

There are 250 statements, each of which is either definitely true or definitely false. Statement number 'n' says that 'n' statements, out of these 250, are false. For example, statement number 50 states that 50 statements are false. The question is, how many of these 250 statements are true? 

It is difficult one. I hope you will enjoy doing it.