GMAT Data Sufficiency Problems
Questions 1 - 27, pg 278 - 279

This series of videos by khanacademy will show you how to answer the practice questions in the data sufficiency math section of the The Official Guide for GMAT Review

It would be best that you go through the GMAT practice test questions in the Study Guide first and then look at the videos for the questions that you might need help in.

The videos on this lesson are for GMAT Practice Questions 1 - 27 (starting from page 278 in the Study Guide)

Questions 1-5, pg. 278

Questions 6-9, pg. 278

Questions 10-15, pgs. 278-279

Questions 16-21, pg. 279

Questions 22-27, pg. 279

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