Consider the following question: Set T consists of all multiples of 5 from 30 to 225 inclusive Column A Column B Mean of Set T Median of Set T A. The quantity in Column A is greater B. The quantity in Column B is greater C. The two quantities are equal D. The relationship […]
Author Archive  Brent

Brent Hanneson is a master tutor with over 20 years of teaching experience. He developed all the math content for Magoosh Test Prep. Brent plays ice hockey in his free time.
GRE Quantitative Comparison Tip #4 – Comparing in Parts
To set up today’s Quantitative Comparison (QC) strategy, please solve the following question: A. The quantity in Column A is greater B. The quantity in Column B is greater C. The two quantities are equal D. The relationship cannot be determined from the information given There are several different ways to solve this question. […]
GRE Quantitative Comparison Tip #3 – Logic over Algebra
In previous posts (Tip #1 – Dealing with Variables, Tip #2: Striving for Equality), I have discussed two approaches when tackling Quantitative Comparison (QC) questions involving variables. Those approaches are: 1) Apply algebraic techniques 2) Plug in numbers In those posts, I noted that the algebraic approach is typically the faster and more reliable approach. […]
GRE Quantitative Comparison Tip #2: Striving for Equality
In my previous post, we examined the pros and cons of two approaches for tackling Quantitative Comparison (QC) questions involving variables. Those approaches are: Apply algebraic techniques Plug in numbers In today’s post, we’ll examine a useful strategy that can increase the effectiveness of the pluginnumbers approach. To set up today’s strategy, please consider the […]
GRE Combinations and…Noncombinations
Whenever I see a GRE resource label its counting section as “Combinations and Permutations,” a small part of me dies a little. Okay, that’s an exaggeration, but I am concerned about the misleading message that this sort of title conveys. To me, it suggests that counting questions can be solved using either permutations or combinations, […]
Rules and Counting Techniques for Probability on the GRE
In my last two posts, we looked at ways to make up time with probability questions on the GRE by quickly eliminating answer choices, and then guessing the correct answer. In those posts, we examined the following question: From a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected […]
GRE Probability Questions: Using the Elimination Strategy
In my last post, we examined the following question. From a group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected to attend a conference in Las Vegas. What is the probability that Marnie and Noomi are both selected? (A) 0.1 (B) 0.2 (C) 0.25 (D) 0.4 (E) 0.6 In […]
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 […]