Spend at least 30 minutes on a problem before looking at the solution.
Do not open the PDF until you have stared at a problem for 30 minutes. Pillai’s problems are designed to shift your perspective. If you give up after 5 minutes and check the solution, you learn nothing. Spend at least 30 minutes on a problem
: Mastering the delicate dance between roots and coefficients. Spend at least 30 minutes on a problem