However, treat it as a for your brain. It is not meant to be read passively. You must struggle with each problem, make mistakes, and try again. That struggle is where growth happens.
The "Skanavi" methodology is famous for its tiered approach to learning: Skanavi Pdf
M. I. Skanavi's " Collection of Problems in Mathematics for Entering Universities However, treat it as a for your brain
The Ultimate Guide to Skanavi PDF: Mastering Mathematics for Competitive Exams forcing students to think critically.
Modern digitized PDFs allow you to jump instantly to specific topics like "stereometry" or "logarithms."
It goes well beyond standard school textbooks, forcing students to think critically.