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Archive | Plugging In

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 plug-in-numbers approach. To set up today’s strategy, please consider the […]

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GRE Quantitative Comparison Tip #1 – Dealing with Variables

Today’s post is part one in a series of posts (Tip #2: Striving for Equality, Tip #3: Logic over Algebra, Tip #4: Comparing in Parts, Tip #5: Estimation with a Twist) devoted to Quantitative Comparison (QC) strategies. To help set up today’s discussion, please consider the following question: Column A Column B   A. The quantity […]

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GRE Math Review Quiz: Plugging In

I’ve compiled 7 practice problems (some old, some more recent) from math posts on our blog that are great practice for using the “plugging in” strategy.  If you’re already familiar with the approach, test yourself with these problems to review the strategy– it’s a method you’ll definitely be able to use for several different question […]

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Part II: Does Plugging in Work on GRE Quantitative Comparison?

Can Plugging In Work on Quantitative Comparison? Plugging in, a great strategy on problem solving, can also be very effective on the current and new GRE’s quantitative comparisons. The ground rules for plugging in on quantitative comparison, however, are a little different. But before I explain how, why don’t you try to crack the following problem. Xyla […]

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New GRE Question Type — The Empty Box (aka Numeric Entry)

Two trains starting from cities 300 miles apart head in opposite directions at rates of 70 mph and 50 mph, respectively. How long does it take the trains to cross paths? This is a classic problem that sends chills up students’ collective spines. I’m now going to add another bone rattling element: The Empty Box. […]

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