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Magoosh Brain Twister: Going Through a Phrase – Explanation
Welcome back! If you haven’t had a chance to try your hand at this week’s Brain Twister, head back to the original post so you don’t accidentally see the answer here. Question A “phrase” is made up...
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Magoosh Brain Twister: A Known Unknown
Twist your brain with this challenging GRE problem! Then, leave a comment with your work and best guess. Good luck! x^n + x^n + x^n = x^(n + 1) Which of the following must be true? I. n = 2 II. x...
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Magoosh Brain Twister: A Known Unknown – Explanation
Welcome back! Today, we’ll go over Tuesday’s Brain Twister problem. Question x^n + x^n + x^n = x^(n + 1), where x cannot equal zero. Which of the following must be true? I. n = 2 II. x = 3 III....
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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...
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GRE Math: What’s the Difference Between Combination and Permutation?
Do you know the difference between permutation and combination? No? You’re not alone. Combinations and permutations are the bane of many students. Yet, what I’ve noticed over the years is it’s not so...
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GRE Math Formula eBook
Based on your suggestions, our third Magoosh GRE eBook is a compilation of must-know GRE math formulas for you to reference and memorize as you study! Though memorizing a math formula (or twelve)...
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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...
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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...
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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,...
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Positive and Negative Square Roots on the GRE
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...
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