My most recent blog posts have concerned tricky Data Sufficiency questions about systems of equations. Specifically, they’ve been about what can go wrong when you misremember a rule and assume that it’s possible to solve for two variables if and only if you’re given two equations, and generally that it’s possible to solve for n […]

# Archive | Challenge Questions

## GMAT Sentence Correction: Do You Got What It Takes? – Explanation

Welcome back! Before we get started, take a moment to review Monday’s Sentence Correction question. Question In the middle of the 19th century, mathematician turned computer scientist Ada Lovelace aided Charles Babbage by developing the first computer algorithm, a breakthrough that ushered in the computer age, leading to machines capable of executing functions far more […]

## GMAT Sentence Correction: Do You Got What It Takes?

Below is a question that is both good news and bad news if you see one like it test day. First off, you are doing very well to see such a difficult question, because of the computer-adapted nature of the test. The bad news: you might burn up a lot of time and not even […]

## Consecutive Integers and Multiples on the GMAT

To begin, here are four reasonably challenging practice problems. 1) S is a set of n consecutive positive integers. Is the mean of the set a positive integer? Statement #1: the range of S is an even integer Statement #2: the median of S is a positive integer 2) If N = 255 is the […]

## Challenge Question #5: Win a Free Magoosh Account

Answer this question, and you could win a free Magoosh account. 🙂 We’ll have a new problem every month. You can see past challenge questions here. Here’s what to do: 1. Submit an answer and explanation in the comments of this post by 2PM on Thursday, the 24th. 2. I will pick the comment with the […]

## Challenge Question #4: Win a Free Magoosh Account

Answer this question, and you could win a free Magoosh account. 🙂 We’ll have a new problem every month. You can see past challenge questions here. Here’s what to do: 1. Submit an answer and explanation in the comments of this post by 2PM on Thursday, the 20th. 2. I will pick the comment with […]

## GMAT Tuesdays with Kevin: GMAT Quant Challenge Question

Hello! 🙂 Today, I talk through how to solve this tricky-looking geometry question. If you have any questions for us or suggestions for future video topics, let us know in the comments below. Enjoy!

## Challenge Question #3: Win a Magoosh Account!

Round 3 of our challenge question + free Magoosh series. Today, we’ve got a ‘Hard’ SC problem for you to tackle. Submit an answer and an explanation in the comments by 2PM Pacific Standard Time on Thursday, and we will pick the comment with the best explanation as our winner. You can also comment on […]

## Challenge Question #2: Win a Magoosh Account

Hey guys! It’s time for our 2nd challenge question. This time, we’ll be focusing on a Problem Solving question. Submit an answer and an explanation in the comments by 2PM Pacific Standard Time on Thursday, and we will pick the comment with the best explanation as our winner. You can also comment on the post […]

## Challenge Question #1: Answer

Thanks for all the responses, and a special congrats to our winner, Umesh! 🙂 Here’s the answer to yesterday’s challenge problem: Sentence Completion: The president’s latest television news conferences indicate that the aggression may, or already has, begun in the disputed territory. a. may, or already has, begun in the disputed territory b. may begin, or […]