Witness an encore presentation of "Mathemagician" Arthur Benjamin's astounding feats of mental mathematics and learn the secrets behind his skills in this captivating 57-minute video from the World Science Festival. Explore a combination of math and magic as Benjamin demonstrates his ability to multiply large numbers faster than a calculator, determine the weekday of any historical date, and recite Pi to 100 decimal places. Delve into topics such as squaring two-digit numbers, magic squares, birthday calculations, mental math techniques, the Rubik's Cube problem, and Fibonacci numbers. Marvel at Benjamin's grand finale as he squares a random five-digit number, showcasing the entertaining and educational potential of mathematics for audiences of all ages.