vikram4689,

That doesn't sound right to me. I was on a conference call with folks at GMAC, and they said

a) there will be a base number of questions of each of the four types --- they would not say what those numbers were
b) that base portion will consist of eight questions, will have the same composition of questions for everyone, and will be the graded portion for everyone.
c) the actual IR sections test-takers see will have those questions plus four experimental questions; the experimental questions can be mixed up in any order amongst the graded questions
d) while everyone's graded portion has the same ratios of questions, folks will see real IR sections with different ratios because of the experimental questions.

So, sorry to burst your bubble, but you could have 4-5 MSR questions --- some would probably be experimental, but by the time you get to the fourth or fifth one and realize you have that many, you will have no way to determine which ones were experimental, so you will have to do your best on all of them.

See this post:
https://magoosh.com/gmat/2012/how-will-t ... be-scored/

I hope this helps.

Mike