GMAT Topics Problem Solving Data Sufficiency GMAT Math: 11-6, pg. 152 GMAT Prepare for the Graduate Management Admission Test by going over these practice problems. Topics Problem Solving Sal works through the 249 math problem solving questions in the o... Browse 54 videos Data Sufficiency Sal works through 155 data sufficiency problems in the GMAC GMAT ... Browse 42 videos