"Coolest" math book on my shelf (I'm a Math/CS Major) is "Street-Fighting Mathematics" by Sanjoy Mahajan. It's about "the art of educated guessing and opportun

"Coolest" math book on my shelf (I'm a Math/CS Major) is "Street-Fighting Mathematics" by Sanjoy Mahajan. It's about "the art of educated guessing and opportunistic problem solving". The author used to teach these topics as a class at MIT.