Learn AEIS exam heuristics: draw to scale, test cases, and back-substitution to verify solutions under timed conditions.
https://www.scribd.com/document/945063965/AEIS-Primary-Number-Patterns-Exercises-Techniques-and-Shortcuts-197636
Learn AEIS exam heuristics: draw to scale, test cases, and back-substitution to verify solutions under timed conditions.