Current tag: gmat on demand.
Video: Solving for One Variable Among Many in DS Questions
In this GMAT video, Rich begins by presenting a sample DS question. The question tests your ability to solve for the value of an expression — without necessarily solving for the variables in that expression. Jess and Rich then go on to explain the best way to solve for one… Read more >
Video: How to Solve for the Value of an Expression (Without Solving for its Variables!)
As Jess and Rich explain in this GMAT video, oftentimes on Data Sufficiency problems you’ll be given more variables than you have equations. This happens for two main reasons: You’re just given more variables than equations (you know, because it’s fun) You’re given as many variables as equations, but not… Read more >
Video: The Basics of Independent and Dependent Equations
In this video, Jess and Rich cover the basics of independent and dependent equations on Data Sufficiency questions. Here are some of the concepts they discuss: Systems of equations are dependent if one equation can be formed by manipulating and/or combining the others. If no manipulation/combination can create dependent equations,… Read more >
Video: Three Classic DS Questions Involving Systems of Equations
In this video, Jess and Rich cover helpful strategies for solving Data Sufficiency questions involving systems of equations. There are three sample problems to try on your own: pause the video at 00:37, 5:30, and 8:00 to try your hand at each one. After you’ve given each one a shot,… Read more >
Video: How to Simplify Data Sufficiency Questions
In this GMAT video, Jess and Rich show you the best methods for simplifying Data Sufficiency prompts and translating equations into more helpful forms. They present two sample problems (pause the video at 00:21 and 4:10 to try them out for yourself), and then walk you through the most efficient… Read more >
Video: Testing Cases in Data Sufficiency
In this video, Jess and Rich talk about “testing cases” in Data Sufficiency problems — i.e. coming up with example numbers and trying them out to see what happens. The goal of this strategy is to help you determine if the DS question prompt is always, sometimes, or never true…. Read more >
Video: Don't Solve Data Sufficiency Problems!
In this video, Rich and Jess kick off a quant session all about Data Sufficiency. In this first portion of the lesson, they cover the “Don’t Solve” strategy for DS — which, as Jess points out, is one of the best math tips around! Remember: for DS problems, all you… Read more >
Video: Two Classic CR Weakening Questions
In the final installment of our Critical Reasoning Lesson 2, Jen and Dave walk you through two sample Critical Reasoning “Weakening” questions. Test out your skills and learn how to work efficiently without getting distracted by tricky answer choices. Looking for more CR help? Earlier installments of this CR lesson… Read more >
Video: How to Weaken a Critical Reasoning Argument
In this video, Jen and Dave will run through the basics of “weaken” CR questions. In past CR videos, you’ve learned how to strengthen a CR argument; now learn to identify answer choices that act as weakeners. As Jen and Dave explain, two of the most common ways an answer… Read more >
Video: Two Classic CR Strengthening Questions
In earlier segments of this Critical Reasoning lesson, Jen and Dave explained the best ways to approach GMAT Critical Reasoning “strengthen” questions. Now, in the fourth installment of the lesson, it’s your turn to test your skills with two sample questions. Jen and Dave will give you time to tackle… Read more >
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