@GMATPill - I didn't answer this question but I think the whole notion of "I did it in 30 seconds, so can you" claim is invalid. If any one of use scored in the 98th %ile and then entered the MBA Consulting world, we would be able to solve it in 30 seconds too. The real question is - when you were studying in the 600 range, as you stated on your website, how long did it take you?

If you know how to strategically approach questions like these, you can most efficiently answer them in as little time as possible.

The above quote is essentially what we're all trying to learn here... So what's more important here is how you learned all of those rules to arrive at the correct answer! Cheers

thephoenix wrote:IMO which is correctly refering to the layered constructed as it is followed by singular verb IS had it been refering to wings then the verb should have been are
am i wrong in clamimin above statement

can the portion :layered construction of a butterfly's wings , be appositive. In that case which will refer to ultratin .....

@money9111,

Everybody approaches questions differently and the methods I show seem to be the most efficient. I try to show these
methods and thought processes so it saves time.

As to how I got there--I urgently focused for 2 weeks on GMAT questions that I got wrong. I kept asking myself how I could have gotten to that same answer in less time. I did this because I knew timing would be a crucial component to the exam--not just understanding the concepts.

Here is how I kept re-doing questions I got wrong as well as the ones I got correct: https://www.gmatpill.com/practice-questi ... questions/

I learned that the explanations in the Official Guide were extremely inefficient. The other material I looked at (generic Kaplan resources) were incongruent to these thought processes I honed. But I stuck to these thought processes because the results showed: I was answering questions correctly in half the time that I needed before.

Hope this makes sense to you--and yes, examining your own thought process is critical to figuring out what needs to be changed for better results. If you have any questions, please feel free to contact me directly.

All the best,