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## How to Approach Complicated Math Problems

Every GRE test is going to have a few math questions that are very difficult. Upon seeing them, you may become completely flustered and believe that there is no way you are able to solve such a question. Oftentimes this is not the case. Rather, you fall into any number of traps that prevent you [...]

## 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 [...]

## GRE Perfect Math Score Challenge

The Revised GRE is a long, grueling test. To get a perfect score on the quantitative section (a 170) you will not only have to answer the difficult questions correctly, but you will also have to answer all of the easy ones. Nonetheless, I’ve focused on the difficult questions for the 170-challenge. I can’t promise [...]

## GRE Data Interpretation Strategies

Helpful Tips for the GRE Data Interpretation Section If I had to count the number of questions/concerns regarding combinations or permutations, I’d have to use some pretty mighty factorials to do so. On the other hand, if I had to count the number of times students have expressed the same misgivings regarding Data Interpretation, I’d [...]

## Compound Interest vs. Simple Interest on the GRE

For some this is the most “interest”ing concept on the Revised GRE (at least for those with a fondness for bad puns). For most, compound vs simple section can be a nuisance. Many think, what is the difference between the two, and/or how did that formula go again? But remember, this concept involves money, and [...]

## GRE Counting and Probability: Practice Question of the Week #39 Answer

Here’s the answer to yesterday’s practice question– thanks for sending in all of your answers and explanations!

## GRE Counting and Probability: Practice Question of the Week #39

Here’s this week’s practice question– good luck, we’ll be posting the answer tomorrow! How many integers between and  are such that the sum of their digits is ? 190 210 211 230 231 Update: Answer/explanation post!

## GRE Permutations: Practice Question of the Week #37 Answer

Here’s the answer to yesterday’s practice question, thanks for sending in all of your answers!   Video Explanation

## GRE Permutations: Practice Question of the Week #37

Here’s this week’s practice question (regular multiple choice, just one answer), we’ll be posting the answer tomorrow. Good luck! A popular website requires users to create a password consisting of digits only. If no digit may be repeated and each password must be at least 9 digits long, how many passwords are possible? 9! + [...]

## GRE Word Problem Trap #1: “Cannot be determined…”

“Cannot be determined by the information given” Michael drives x miles due north at arrives at Point A. He then heads due east for y miles. Finally, he drives z miles in a straight line until he reaches his starting point. If x, y, and z are integers, then how many miles did Michael drive [...]