GMAT Math Articles

  • Combining Methods on the GMAT

    Combining Methods on the GMAT

    by on October 22nd, 2014

    It’s no secret that there are several strategies for tackling quantitative problems on the GMAT, but you may not have realized that combining methods creates even more options. Let’s take a look at the following … Read More

  • GMAT Practice Problems: Sets

    GMAT Practice Problems: Sets

    by on October 17th, 2014

    Here are four reasonably challenging problems about sets. 1) At a certain school of 200 students, the students can study French, Spanish, both or neither. Just as many study both as study neither.  One quarter of those … Read More

  • How to Interpret Unfamiliar Symbols on GMAT Quant Questions

    How to Interpret Unfamiliar Symbols on GMAT Quant Questions

    by on October 16th, 2014

    Succeeding on the GMAT requires a great many things. Firstly, you must be able to decipher and solve complex logic puzzles in mere minutes. Secondly, you must be able to maintain focus for many consecutive hours. The … Read More

  • Correctly Solve Vague GMAT Questions

    Correctly Solve Vague GMAT Questions

    by on October 15th, 2014

    Questions on the GMAT can be described in many different ways. I’ve heard them described as everything from juvenile to vexing, simple to impossible. One term that appears very infrequently as a characteristic of the … Read More

  • 95% of Students Find This Quant Question Difficult

    95% of Students Find This Quant Question Difficult

    by on October 8th, 2014

    Today we look at ways to achieve that much desired score of 51 in Quant. Obviously, we don’t need Sheldon Cooper’s smarts to realize that for that revered high score, we must do well on the high level questions but … Read More

  • GMAT Avengers Study Group: Coordinate Geometry

    GMAT Avengers Study Group: Coordinate Geometry

    by on October 6th, 2014

    Coordinate geometry, or Cartesian geometry, is the study of geometry using a coordinate system and the principles of algebra and analysis. The Coordinate Plane In coordinate geometry, points are placed on the … Read More

  • GMAT Avengers Study Group: Quadrilaterals

    GMAT Avengers Study Group: Quadrilaterals

    by on October 3rd, 2014

    A polygon is a closed 2D shape with all the straight lines. A quadrilateral is a polygon with 4 sides or edges and four vertices or corners and the sum of its angles equals 360°. There are 5 types of quadrilaterals and … Read More

  • Handling “Analyze the Answer Choices” Questions

    Handling “Analyze the Answer Choices” Questions

    by on September 30th, 2014

    Consider the following two questions: Question #1: If 10 is the greatest common divisor of positive integers  and , and 20 is the lowest common multiple of and , what is the value of ? A) 15 B) 20 C) 30 D) 100 E) 200 … Read More

  • Free Yourself from Calculator Math

    Free Yourself from Calculator Math

    by on September 17th, 2014

    There are few things more alluring than shortcuts. Oftentimes we are aware of how much work, effort or time is required to accomplish a task, but we naturally gravitate towards something that can accomplish that task … Read More

  • GMAT Avengers Study Group: Functions

    GMAT Avengers Study Group: Functions

    by on September 12th, 2014

    A function is a rule that takes an input and gives an output. When we are told the equation of a function, that equation makes explicit the rule this particular function is following. For example, for the function , the … Read More

  • GMAT Prep Story Problem: Make It Real Part 2

    GMAT Prep Story Problem: Make It Real Part 2

    by on September 10th, 2014

    How did it go last time with the rate problem? I’ve got another story problem for you, but this time we’re going to cover a different math area. Just a reminder: here’s a link to the first (and long ago) article in … Read More

  • Using “Word Equations” to Help Write Algebraic Equations

    Using “Word Equations” to Help Write Algebraic Equations

    by on September 3rd, 2014

    Algebraic techniques can often help us solve word problems. The process typically involves assigning one or more variables, writing an equation (or two or three), and then solving that equation. It sounds easy enough, … Read More

  • GMAT Prep Story Problem: Make It Real

    GMAT Prep Story Problem: Make It Real

    by on September 2nd, 2014

    In the past, we’ve talked about making story problems real. In other words, when the test gives you a story problem, don’t start making tables and writing equations and figuring out the algebraic solution. Rather, do … Read More

  • GMAT Prep Challenge: Can You Do This Math Problem?

    GMAT Prep Challenge: Can You Do This Math Problem?

    by on August 25th, 2014

    No introduction to this one—see what you can figure out and then we’ll talk about it! This is a GMATPrep® problem from the free exams. * “If n and y are positive integers and , which of the following must be an … Read More