GMAT Data Sufficiency: Math Videos

This series focuses on data sufficiency, a question type unique to the GMAT business school entrance exam. Instead of solving a problem outright, you decide whether you have enough information to solve it. Each video walks through a problem and shows how to think it through efficiently. This style of reasoning is useful beyond the test, since it builds the habit of asking what information really matters. You will need solid high school math, including algebra, geometry, and number properties.

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