Here’s another set of video explanations (one math, one verbal) of practice problems found in ETS’s Paper-based Practice Test for the Revised GRE, a PDF released by the test-makers themselves.
You can find the whole set of explanations for every practice problem here. Enjoy!
Math: Section 5, Question #18 on page 78 that begins: “How many of the six corporate sectors listed each contributed more than $60 million…”
Verbal: Section 3, Question #18 on page 56: a Sentence Equivalence question that begins, “Even in this business, where ___________ is part of everyday life, a talent for lying…”