The GMAT/MBA Library

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

Next Year Starts Now: A New Webinar Series for 2019–2020 MBA Applicants!

by mbaMission on October 3, 2018

Are you planning to apply to business school in 2019–2020? It is not too early to start preparing for your applications, and we can help! The [...]


The GMAT Avengers Challenge of the Week: Quant Mixture – Part 2

by Sorin Istrate on October 23, 2017

Can you solve this week's Avengers challenge?


The GMAT Avengers Challenge of the Week: Quant Mixture – Part 1

by Sorin Istrate on October 9, 2017

Can you solve this week's Avengers challenge?


Land Your Score: Probability Problems Primer

by Kaplan GMAT on June 16, 2017

Save time on Test Day with this trick for calculating desired outcomes.


The GMAT Avengers Challenge of the Week: Probability – Part 2

by Sorin Istrate on December 12, 2016

Can you solve this week's Avengers challenge?


The GMAT Avengers Challenge of the Week: Probability – Part 1

by Sorin Istrate on November 28, 2016

Can you solve this week's Avengers challenge?


Know the GMAT Code: Quadratics

by Manhattan Prep on October 8, 2016

Push yourself to find the patterns or to articulate the underlying principles behind what you’re seeing.


GMAT Probability Problems for a High Quant Score

by Target Test Prep on April 22, 2016

Practice high-value Probability problems with Target Test Prep GMAT experts Scott Woodbury Stewart and Jeffrey Miller.


GMAT Tuesdays: Probability and Counting

by Magoosh GMAT on August 25, 2015

Today we learn more about probability and counting. Probability questions involving counting are really just multi-step counting problems. Watch the video to learn more. And if [...]


GMAT Probability, Simplified.

by Economist GMAT Tutor on July 18, 2015

Probability questions on the GMAT often confuse students. Discover a simple strategy.


Counting Practice Problems for the GMAT

by Magoosh GMAT on March 7, 2015

Try out these practice problems to help you improve your counting skills.


The Word “Or” in GMAT Math

by Magoosh GMAT on February 11, 2015

Remember this piece of advice—it will save you trouble in counting and probability problems.


One More RTD Table Problem: Average Rates Part 2

by Magoosh GMAT on February 2, 2015

Learn how to use the RTD table to solve a challenge Average Rate problem.


Probability Basics: The Very Least You Should Know

by Veritas Prep on November 1, 2014

Find out a helpful “trick” to avoid some of the most time-consuming types of problems on the GMAT.


Take a Study Break with This Challenge Question

by Veritas Prep on August 6, 2014

Understand the adjunct rules on particular questions in order to correctly solve the problem.