Mathemagics

Mathematician and magician Arthur Benjamin combines his two passions in “Mathemagics,” a mind-boggling presentation of lightning calculations and other feats of mathematical agility. In a lively show, “mathemagician” Arthur Benjamin races a team of calculators to figure out 3-digit squares in his head, performs a massive mental calculation, and guesses a few birth days. How does he do it? He’ll be happy to tell you: