It's great that you want to enroll in such a complex specialty to the university. I can advise you to first calculate your academic points, and then try your hand. If there are difficulties, try to count through the www.collegegpacalc.com/.
Hm... if you want my opinion you should turn for help to those who know all the ropes about it. Have you heard about this site edupeet.com ? This service helps people with researchers, essays , homework. I think they may help you with these entrance exams . You should at least try it. All methods are good.