thanks a lot all of u 4 ur encouraging words. but I want to know wat went wrong with my preperation. while solving problems I got struck in middle & could not proceed further. but one thing is sure. compared to past 2 exams paper was really tough. In my 1st attempt in nov. 07 I had'nt studied anything but managed to score 34 in a/cs. this time preperation was almost ten times better, but I was not lucky.
Anyhow now I think I should attempt other papers.