The Candy Store
How many jelly beans are in the jar? See if you can figure out the exact count -- not just an estimate.
View ArticleJordan Ellenberg: The Lottery Scheme
Ten years ago a group of M.I.T. students cracked the Massachusetts State Lottery. Can you figure out how they did it? A challenge from superstar mathematician Jordan Ellenberg.
View ArticleU.S. Team Wins First Place at International Math Olympiad
The U.S. team has won the 2016 International Math Olympiad. Try two problems from this year's test, moderated by U.S. Coach Po-Shen Loh.
View ArticleDodging 9s
Take a crack at this algebra challenge by Sam Vandervelde, head of Proof School in San Francisco.
View ArticleThe Same Court Time
Activate your Olympic spirit with a challenge from the Rio resident and mathematician Marco Moriconi.
View ArticleOlympic Strategies, Part 1
Try these Olympics-themed puzzles from Po-Shen Loh, team lead for Team U.S.A, winner of this year's International Mathematical Olympiad. Also -- If you could train with the best, would you?...
View Article