I'll lower the price for a while. Power Problem Collection for Learning by Theme in Fiscal Year 2025 - Title: 20 Years of Power: Thoroughly Learn by Theme - Publisher: Denkishoin - Target Years: 2024-2005 - Features: Theme-based for Fiscal Year 2025, Revised Structure - Format: Problem Collection Thank you for viewing. There are no markings. The cover was removed and used, so it's showing its age, but the contents are not in good condition. Please be aware of this before purchasing. Personal thoughts/opinions: I passed with a good score by studying only this book. Recent past exam questions are available online, so this book is, in a sense, valuable.