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GMAT Data Sufficiency Problems
Questions 51 - 72, pg 281 - 283


Free online video lessons from khanacademy covering the practice questions in the data sufficiency math section of 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.

These video lessons are for GMAT Practice Questions 51 - 72 (starting from page 281 in the Study Guide)

Questions 51-54, pgs. 281-282

Questions 55-58, pg. 282





Questions 59-62, pg. 282

Questions 63-68, pgs. 282-283

Questions 68-72, pg. 283




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