Hi prav04,
I’m glad you reached out, and I’m happy to help. So, you ask a difficult question. Remember, your GMAT score is based on not only the number of questions you answer correct/incorrect, but also the difficulty of those questions, among other things. For example, you could get 10 questions wrong on a given exam and score a Q43 and get 10 questions wrong on another exam and score a Q48.
Rather than spending time worrying about the GMAC algorithm, you really should focus on the things you can control, and the number one thing you can control is getting better at the GMAT. If you get to a point at which you can dominate the GMAT, the specifics of the scoring algorithm won't matter because you will to have the skills you need to get an amazing score, right?
You may find it helpful to read this article about
how to score a 700+ on the GMAT.
If you have any further questions, please reach out.
Good luck!