Willem Bouman from Alphen aan den Rijn has as a calculation miracle multiple world records be in his name. Rooting, prime numbers, factoring: for Bouman it’s a piece of cake. With his math talent he even reached the king† So if there’s anyone who can teach you about mental arithmetic, it’s him. On Saturday he will therefore try to break his own world record in mental arithmetic for the sixth time.
–
/data/photo/2022/05/20/628755a80623a.jpg?resize=150%2C150&ssl=1)