Dear Lath2011,
Thanks for your kind words. The last 15 days before my exam, I just practised on
MGMAT tests and G Prep tests. By then, it has been a month that I touched OG 12 - of course, I was unable to complete it

. According to the posts by Mahtab and you, I feel this was my major mistake. I believe that the answer to the question still lingering in my mind, 'why din't I get at least a 600' would come from my regular and consistent practice with OG 12. I am done with all the
MGMAT books, and currently not in a state of taking another course. Since I have exhausted G Prep, which standard validation should I rely upon once I am done practising OG guide?
I felt so dejected, but knowing that there are people who would raise an effort to help me, I feel I am budding once again!
Thank you for that