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Archive | Probability

FAQ: Should I Study Probability?

I have 30 days to the test and am terrified about probability…what should I do? There is perhaps no other topic on the GRE math that instills as much dread in students as does probability. Understandably, students will obsess over this topic more than they will other topics. However, such an approach won’t only lead […]

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How Many Probability Questions are on the GRE?

There are few concepts on the GRE that frighten students more than that of probability. Many go out of their way to study difficult probability questions, agonizing over concepts that are beyond the scope of the GRE. Test day, though, you might only see one probability question. You will probably see two, though you might […]

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GRE Math Multi-subject Challenge Question

Once in a while it is fun to take a concept in an official GRE question and run with it. The question below is inspired by a question from the 2nd edition Official Guide. That is not to say it is that similar; I have only extracted a couple of concepts from that problem. I’ve […]

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Breakdown of the Most Commonly Tested GRE Quant Concepts

The 2nd edition Official Guide has just been released. At the back of the book is a new test (GRE Practice Test 2). In general, the concept break down is not surprising, if you look at the concepts that pop up in Practice Test 1 (which is the same as the practice test in the […]

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Strategies for Difficult GRE Questions

Below is a challenging GRE question. However, instead of just having you take a blind hack at it, I want to provide a little bit of context. First off, if you sense that a question is very difficult on the test – be it a verbal or quantitative one – then skip it. Because the […]

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GRE Probability Questions

If you’re like most students, you probably struggle with the GRE’s time constraints, and you probably have difficulties with probability questions. Great! In this article, we’ll examine how probability questions can provide you with a convenient opportunity to make up lost time. To set this up, please consider the following scenario: It’s test day, and […]

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Prime Numbers and Probability – GRE Math Problem

Oftentimes, math problems will require that you know more than one concept. Sometimes, you’ll have to know the difference between an integer and a number in order to get the question right. Below, I’ve combined prime numbers with probability, two subjects already covered in this blog. The question below isn’t easy and actually takes a […]

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GRE Math — The Probability of a Coin Toss

If rate problems bring to mind moving trains, then there is no more iconic type of probability question than the coin toss. And there is good reason for this—coin tosses represent a fair portion of probability questions on the GRE. Even if a question doesn’t invoke the coin toss, the way we approach a coin toss problem […]

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