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Author Archive | Mike MᶜGarry

GMAT Sentence Correction: the “Due To” Mistake

This mistake is astonishingly common in spoken English, even among otherwise well-spoken people.  In the six Sentence Correction practice questions below, all the questions contain “due to.” Where is it used correctly and where is it wrong?   1) Elysium Field Construction planned to build a ten-story building the suburban downtown, but due to unstable bedrock […]

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GMAT Quant: Rates and Ratios

What are rates and ratios? How do rate and ratios problems differ? Hint: Not that much. Original photo by Pierre Rougier In fact, rates are just ratios in disguise. Here are a four GMAT practice problems exploring rates and ratios.  Remember: no calculator! Rates and Ratios Practice Problems 1) Someone on a skateboard is traveling 12 miles […]

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Number Sense for the GMAT

What is number sense and how can you recognize number sense problems on the GMAT? Before we get into the details, let’s start with a few number sense practice problems. Remember, no calculator. Warm-Up Problems 1) Rank those three in order from smallest to biggest. (A) I, II, III (B) I, III, II (C) II, I, […]

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GMAC’s Official IR Practice Questions

Back in June 2012, the GMAT launched the Integrated Reasoning (IR) question.  At the time, there was a panic among GMAT test-takers, and GMAC saw one of the largest peaks ever in number of GMATs taken, just before June, 2012—all the folks who wanted to avoid this then-brand-new question!  In 2013 and 2014, adcom saw a […]

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Common GMAT Topic: Descriptive Statistics

Here’s a whirlwind tour of one of the most frequently tested sets of concepts on the GMAT Quantitative section: GMAT statistics. You don’t have to be an expert on statistics: a little goes a long way. Let’s learn some basic descriptive statistics formulas and go from there. Descriptive Statistics Formulas The Mean One very important GMAT […]

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