It’s a great question! Generally, the three resources you mentioned from GMAC do contain distinct question sets, but there may be some overlap in concepts or question types. Here’s a quick breakdown:
OG Verbal Review: Focuses specifically on verbal skills and typically includes unique questions aimed at improving your verbal reasoning.
OG Practice Question Module: This is usually an online resource with practice questions that can vary, often with a mix of question types and difficulty levels, and is designed for targeted practice.
OG 2024-25 Guide: This comprehensive guide includes a variety of questions across all sections (Quant and Verbal) and tends to have unique questions, although some foundational questions might overlap with the other resources.
To ensure you’re getting the best value, it might be worth checking user reviews or community discussions to see if others have noted any significant overlaps. If you can, consider starting with one or two resources first to gauge their effectiveness for you. Good luck with your GMAT prep!