The playlists below organize my video explanations to the three computer based tests that are part of the official GRE POWERPREP PLUS Online tests. These tests were released in 2017 (Test 1 and 2), and 2019 (Test 3) and the current cost of these online tests is $39.95 for each test. They are expensive but they are the closest to the real exam, and I urge all GRE takers to practice with these tests. After taking the tests, you can review the videos listed below on the problems that you missed.
Depending on how you do in the first Quantitative reasoning section(Section#3) of the POWERPREP PLUS Online test, your next section will be adaptive, meaning the level of difficulty will change. To identify which of the three possible sections you were assigned (Easy, Medium, or Difficult), just check the beginning of Question#1 in Section#5 and compare it to the description listed below.