Hello! This week, I’ll be explaining how you can avoid a very tricky data sufficiency trap that’s often on the GMAT! I’ll be referring to the data sufficiency answer choices in this problem, so if you need a refresher on what those are, you can find them here. As always, leave us any questions or […]
Here are four GMAT Data Sufficiency questions involving inequalities. Full solutions will come at the end of this article. The arithmetic of equations: a review First of all, let’s review what should be more familiar — the arithmetic of equations. Suppose A = B and P = Q. The soundbyte is: you can combine […]
Hi, everyone! This week’s video is one of my favorites, because it’s about Data Sufficiency, and it has an awesome flowchart: Here’s a screenshot of the flowchart (you should memorize it!):
First off, some of my previous blogs that may be relevant: 1) Data Sufficiency Tips 2) Probability Rules 3) The probability of the “at least” scenario 4) Probability problems involving counting Here are eight practice questions. Solutions will appear at the end of the article. 1) In nine independent trials, what is the probability that […]
Unlike Problem Solving, Data Sufficiency is a question-type unique to the GMAT. Data Sufficiency questions demand their own logic and their own strategies. Sample Data Sufficiency questions from the blog Below are links to seven different blog articles, each with at least two Data Sufficiency sample questions. The solutions are given at the end […]
Probably on every standardized test you have taken in your life, you have had multiple choice math problems — that’s exactly what the Problem Solving questions are. No big surprise there. The other type of question, though, Data Sufficiency, is a beast unique to the GMAT. I would argue that the Data Sufficiency section is […]
First of all, for warm-up, a practice Data Sufficiency question. The symbol What does this symbol mean in math? Technically, this symbol, typographically a dash, has three different meanings in mathematics, viz.: a) a subtraction sign b) a negative sign c) an opposite sign The subtraction sign When the dash appears between two terms […]
How do we know what the possible values for a variable on the GMAT are? First of all, consider this DS problem 1) Is P > Q? Statement #1: P = 5*Q Statement #2: P = Q + R For folks who are not as comfortable with math, or are a bit rusty with math, […]
A good deal of success in math is simply about careful detail management. If you are, by nature, someone already comfortable with math, highly organized and detail oriented, probably none of these mistakes will plague your work. This is a post for folks who may be a little rusty in math, and need to be […]
Learn how to use these formal Geometry rules to your advantage on the GMAT Data Sufficiency section! A reminder about Data Sufficiency If this question format is new to you, read this post. If you have done DS questions for a while, it’s still worthwhile to remind yourself of the basics. You don’t actually […]
Magoosh GMAT Newsletter
Love Magoosh? Get a Badge!
Simply copy the code below and put it on your site:
Check out our Magoosh Badge Program to find out more!
<a href="http://magoosh.com/gre/files/2013/09/magoosh_friend_badge.png"><img src="http://magoosh.com/gre/files/2013/09/magoosh_friend_badge.png"></a>