To effectively memorize facts and figures for the UPSC exam, aspirants can adopt various strategies such as using mnemonics, visualization techniques, and active recall. Creating flashcards can aid in regular revision, while summarizing information in the form of mind maps enhances memory retention. Additionally, spaced repetition plays a crucial role in solidifying knowledge over time. Incorporating practice tests can also identify areas needing improvement and reinforce learning through repetition. Lastly, ensuring a clear and organized study schedule helps in managing content effectively.