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Archive | Exponents

GRE Math Multiple Choice Practice Question of the Week #23

This week’s practice question is a regular multiple choice problem, so there’s only one right answer– good luck! We’ll be posting the answer tomorrow.   Which of the following equations is true for all positive values of x and y?   Update: Here’s the answer/explanation post!

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GRE Math Video Lessons: Exponents

Exponents are troublesome; fortunately, they do not need to be. What I plan to do in this series is show you the basics, so that you can move confidently through the intermediate level, and even the advanced level. I’ve created three lessons, corresponding to basic, medium, and advanced. You can watch them here: Exponents Level 1 […]

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