How to get Exemption in MICS

Hi, friends..I got 50 & 52 marks in MICS in my previous two attempts.....I am not able to get that  how we can get exemption in MICS.In my last attempt i answered all the questions correctly and in language of Compiler and Module..but 1 got only 52 and i was expecting atleast 65 . In previous 2 years i had a chat with many students which have got exemption about how to get  that????but they all have told me that they got the exemption by chance ,their papers were went ordinery.KINDLY SHARE YOUR VIEWS...