Some questions to start: Can a square root be negative? Yes, there is such a thing as a negative square root. How would you deal with negative roots on the GRE? This question is actually fairly complicated, because it depends on how the GRE words the question. Let’s start with some practice problems before I […]

# Author Archive | Mike MᶜGarry

## Diagonals of a Polygon in GRE Geometry

Students love to skip over the basics, asking questions like: How many vertices does an octagon have? How many diagonals does an octagon have? What’s the difference between a regular octagon and, well, an octagon? And GRE geometry does delve into some complex polygon math. But before we get to that, I will begin with […]

## GRE Data Interpretation Practice Questions

Data Interpretation on the GRE Quant On test day, when you sit down to take your GRE, you will have, among other things, two Quant sections. Each Quant section will have a Data Interpretation problem set towards the end of the section. This GRE Data Interpretation set will present data, information, in some graphical form, […]

## GRE Geometry Formulas

Perhaps you recall with more than a little dread your high school geometry class: fifteen-step proofs and the law of cosines were two things you were certain you’d never see again. Well, if you are taking the GRE, you were by no means mistaken — proofs and indeed all of trig are nowhere to be […]

## How to Round to the Nearest Integer | GRE Math

What does it mean to round a number? Rounding means to make a number shorter or simpler, but keeping it as close in value as possible to the original number. Let’s take a closer look: Rounding to the nearest integer The most common type of rounding is to round to the nearest integer. The rule […]

## Adapting the GRE Study Schedules to Your Needs

Magoosh publishes study schedules to help folks in various situations study for the GRE. We have plans for 1-month, 3-months, and 6-months. Three months is a good solid chunk of time to study for the GRE, an interval that many students use, so we have four different three-month plans to focus on the needs of […]

## Challenging GRE QC Problems on Number Properties

Here are nine GRE Quantitative Comparison questions, ranging in difficulty from moderate to quite hard (arguably as hard as, or perhaps harder than, anything you would see on the GRE Quant section). Solutions will come at the end of the article. Remember: don’t touch a calculator! 1) 2) 3) […]

## GRE Quantitative Comparison Geometry Practice Problems

Here is a batch of 7 practice QC questions. Explanations will come at the end of the article. 1) In the diagram, AC = 6. CE = 12, DF = 4, and AB is parallel to DE. 2) 3) In the diagram, JL = 4 and JK = 6. 4) In […]

## GRE Quantitative Comparison Practice Problems

Here are ten practice QC questions. All of these can and should be done without a calculator. Solutions will come at the end of this article. 1) 2) The number n is an integer greater than 2 3) The number x satisfies the restriction 4) 5) Set S consists of the elements {a, b, b, c} […]

## GRE Math: A Rectangle & Parallelogram with Equal Area

Today, we’ll quickly look at how a rectangle and parallelogram can have the same area. In the diagram to the above, the parallelogram and rectangle share a vertex (D), one vertex of the rectangle (E) is on a side of the parallelogram, and one vertex of the parallelogram (C) is on a side of the […]