Thanks for the info. I got the answer. Actually where I saw the question, it didn't have the symbol ^ between 2 and 15, so I read it as two hundred and fifteen. I think there was some printing mistake.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: please help me with this question... I have my exam next week