2009 IMO Shortlist Problems

Problems from the 2009 IMO Shortlist.

Algebra

• A1
• A2
• A3 (IMO 5)
• A4
• A5
• A6 (IMO 3)
• A7

Combinatorics

• C1
• C2
• C3
• C4
• C5
• C6
• C7 (IMO 6)
• C8

Geometry

• G1 (IMO 4)
• G2 (IMO 2)
• G3
• G4
• G5
• G6
• G7
• G8

Number Theory

• N1 (IMO 1)
• N2
• N3
• N4
• N5
• N6
• N7

Resources

• IMO Shortlist Problems
• 2009 IMO