Since recruiting season is just around the corner and some of you may be preparing like crazy for interviews/tests, I want to share a book on mental math that has been extremely helpful to me. It's called "Secrets of Mental Math" by Benjamin and Shermer. You can find it on amazon here
I don't think I'm slow at math but for some reasons calculating in my head under pressure isn't one of my strong suits. I am halfway through the book and find it not only smart, informative, engaging but also extremely fun. I guess this would be useful if you have to sit through numerical test, prepare for theor just simply want to have an interesting read!