## The GMAT/MBA Library

Explore the world's largest collection of GMAT prep and MBA admissions content.

#### Manhattan GMAT Challenge Problem of the Week – 29 July 2013

by Manhattan_Prep on July 29, 2013

Can you solve this week's GMAT challenge problem?

#### Manhattan GMAT Challenge Problem of the Week – 2 July 2012

by Manhattan_Prep on July 2, 2012

To solve this week's challenge imagine two lines in a plane. They either cross, or they don’t.

#### Beat the Coordinate Geometry Blues! Part 2

by Vivian Kerr on May 3, 2011

Learn everything you need to know about parabolas and circles on the GMAT.

#### Manhattan GMAT Challenge Problem of the Week – 19 April 2011

by Caitlin Clay on April 19, 2011

Try this Data Sufficiency Challenge Problem from Manhattan GMAT involving knowledge of circles in the coordinate plane.

#### Breaking Down a GMATPrep Number Line Theory Problem

by Manhattan Prep on January 9, 2011

This week, we’re all about number lines: how to think about them and how to avoid traps. I think this one is deceptively tricky. Don’t [...]

#### 5 Steps for Data Interpretation

by Vivian Kerr on December 10, 2010

Here are 5 steps for you to follow when interpreting data on the GMAT. 1. Read the labels first. Mentally categorize each graph, chart and table. (EX: [...]

#### Breaking Down a GMATPrep Coordinate Plane Problem

by Manhattan Prep on November 30, 2010

This week, we’re going to tackle a harder GMATPrep® problem solving question from the topic of Coordinate Planes (a subset of Geometry). Let’s start with the [...]

#### An Overview of GMAT Data Sufficiency – Lesson Five – Summarizing Information

by GMAT Prep Now on October 6, 2010

This video is part of a new lesson series to review Data Sufficiency on the GMAT. In the coming weeks you’ll see several more videos [...]

#### Beat The GMAT Challenge Question – August 30, 2010

by Beat The GMAT on August 30, 2010

Congrats to Gurpreet Singh for being selected as this week’s winner of the Beat The GMAT Challenge Question.  Gurpreet will receive Premium Access to Beat [...]

#### Manhattan GMAT Challenge Problem of the Week – 15 June 2010

by Caitlin Clay on June 15, 2010

This is our latest Challenge Problem! As always, the problem and solution below were written by one of our fantastic instructors. Each challenge problem represents [...]

#### Knewton’s Wednesday Brutal Math Challenge – Week 2

by John Davies on March 24, 2010

We’re back. Great job last week. We’re once again playing for the new Knewton t-shirt. First person to answer correctly (you must show your work!) [...]

#### Know Your Equations and Formulas

by Steve Felsher on February 9, 2010

One of my students asked me what I think are the three most important things in preparation for the GMAT. I said that the most [...]