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Video: OG Diag Explanation: DS #33
August 4, 2010
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Today's video is an explanation of a problem from the diagnostic test of the Official Guide. It's #33, a question that dives deeper into exponents than many students are comfortable with.
In the explanation, I not only show how to work through the problem, I also discuss a useful overarching strategy for many Data Sufficiency problems. I also touch on some of the underlying content when working with exponents. (All in a little more than four minutes!)
Enjoy!
Remember, I've created (print) explanations to every Quant problem in The Official Guide for GMAT Review and The Official Guide for Quantitative Review. Find out more about those resources here.
About the author: Jeff Sackmann has written many GMAT preparation books, including the popular Total GMAT Math, Total GMAT Verbal, and GMAT 111. He has also created explanations for problems in The Official Guide, as well as 1,800 practice GMAT math questions.
Total GMAT Math
The comprehensive guide to the GMAT Quant section. It's "far and away the best study material
available," including over 300 realistic practice questions and more than 500 exercises! |