Problems from the Archive
Problem 1 Poincaré Conjecture CompetitionProblem 2 Mental Math Challenge
Problem 3 More Mental Math
Problem 4 Divisibility
Problem 5 Riemann Hypothesis
Problem 6 Yang-Mills
Problem 7 N vs NP
Problem 8 Navier-Stokes Equations
Problem 9 Poincaré Conjecture: Millennium #5
Problem 10 Birch and Swinnerton-Dyer Conjecture
Problem 11 Hodge Conjecture
Problem 12 Ramanujan's Congruences
Problem 13 Clock Quiz
Problem 14 Ucles: Cambridge Assessment
Problem 15 Expansion of Polynomials