Articles published in Challenge Problems

More GRE Math Misconceptions

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Manhattan Prep GRE Blog - More GRE Math Misconceptions by Chelsey Cooley

Did you enjoy our last set of GRE Math Misconceptions? Here are four more to watch out for. Read more

What Are the Hardest GRE Math Problems?

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Manhattan Prep GRE Blog - What Are the Hardest GRE Math Problems? by Tom Anderson

And what do they tell us about prepping for the GRE?

Students often ask me, “Where can I find the most difficult questions on the GRE?” In this blog entry, I’ll show you the top three hardest GRE Math problems, ranked by percent of students who got them wrong. Before we get there, I should say: you don’t need to correctly answer questions like these to get a very, very good score on the GRE. This is a test that favors accuracy and consistency on mid-range questions over the ability to get the very hard ones. One can nab a score in the 90th percentile or above without getting any of the very hardest GRE Math problems correct. In case you’re curious, though, this is what the hardest GRE Math problems look like. Each of these questions were correctly answered by fewer than 20 percent of GRE test takers.

Start the drum roll. Read more

How to Create a GRE Problem Log for Quant

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Manhattan Prep GRE Blog - How to Create a GRE Problem Log for Quant by Chelsey Cooley

Having a GRE problem log is like having a budget: sort of a pain sometimes, but much smarter than the alternative. Skeptical? Check out this article first—then come back here when you’re ready to roll. Read more

Using Smart Numbers for GRE Quant

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Manhattan Prep GRE Blog - Using Smart Numbers for GRE Quant by Chelsey Cooley

Here’s a quick cheat sheet on how, when, and why to use Smart Numbers to solve GRE Quant problems. Read more

Can You Ace GRE Quant if You’re Bad at Math? (Part 3)

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Manhattan Prep GRE Blog - Can You Ace GRE Quant if You're Bad at Math? (Part 3) by Chelsey Cooley

If you have a complicated relationship with math, you need to be especially careful about how you study. Some GRE Quant study techniques might seem to make perfect sense, but can actually leave you frustrated and demoralized in the long run. For painless studying, try these next few ideas instead. Read more

GRE Sentence Equivalence: Charge Traps

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Manhattan Prep GRE Blog - GRE Sentence Equivalence: Charge Traps by Chelsey Cooley

In this article, GRE instructor Tom Anderson asks a smart question: is it better to sort of know a lot of GRE words, or to really know a few GRE words? It turns out that you’re better off if you learn fewer words, but really learn them well. If you don’t, here’s one way the GRE could trick you. Read more

GRE Math Misconceptions

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Manhattan Prep GRE Blog - GRE Math Misconceptions by Chelsey Cooley

You can attend the first session of any of our online or in-person GRE courses absolutely free. Crazy, right? Check out our upcoming courses here.


Math can be counterintuitive. There are a few GRE Math misconceptions that really seem like they should be true—but actually aren’t. Being prepared for them will keep you aware on test day. Read more

Quick GRE Tips: Inference Problems

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Manhattan Prep GRE Blog - Quick GRE Tips: Inference Problems by Chelsey Cooley

You can attend the first session of any of our online or in-person GRE courses absolutely free. Crazy, right? Check out our upcoming courses here.


Are you struggling with Reading Comprehension Inference problems? Here are my best quick GRE tips for this tricky problem type. Read more

7 GRE Study Habits of Highly-Effective Students

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Manhattan Prep GRE Blog - 7 GRE Study Habits of Highly-Effective Students by Tom Anderson

You can attend the first session of any of our online or in-person GRE courses absolutely free. Crazy, right? Check out our upcoming courses here.


30 minutes of highly-focused study beats 2 hours of “half-studying.”

I’d like to share with you a little study mantra. This is something I firmly and absolutely believe to be true: “30 minutes of highly-focused study is far better than 2 hours of half-studying.” As much as one might try to make up for poor GRE study habits by slogging through a multi-hour weekend marathon session, it just doesn’t work. There are so many reasons to avoid such lengthy study sessions—increasing fatigue, impaired retention, general painfulness of sitting there for so long… Read more

GRE Math Riddle: Doubling the Average Rate

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Manhattan Prep GRE Blog - GRE Math Riddle: Doubling the Average Rate by Tom Anderson

You can attend the first session of any of our online or in-person GRE courses absolutely free. Crazy, right? Check out our upcoming courses here.


Here’s a GRE math riddle:

Manhattan Prep GRE Blog - GRE Math Riddle: Doubling the Average Rate by Tom Anderson Read more