MathCastle
MathCastleCompetition practice

Putnam

Session A and Session B

The hardest undergraduate competition, in the real A/B format: a six-problem morning sitting, then a six-problem afternoon sitting, each climbing from A1/B1 to a very hard A6/B6. Four original papers with complete worked solutions.

How a paper runs

12 problems · 6 hours

  1. Two sessions, A and B, of 6 problems each. Each session lasts 3 hours.
  2. Each problem is worth 10 points. Full credit needs a complete proof.
  3. Here every problem also has a numeric target, so your answer can be checked.
  4. Session A is handed in before Session B is opened.

Practice papers

MathCastle practice paper. Original problems in the contest format; not affiliated with or endorsed by the contest organisers.

Putnam — MathCastle