| | A | A Simple Question of Chemistry | Mid-Atlantic 2002 | 6 | 8 |
| | B | Above Average | Waterloo local 2002.09.28 | 6 | 15 |
| | C | Let the Balloon Rise | Zhejiang Provincial Programming Contest 2004 | 3 | 11 |
| | D | No Brainer | South Central USA 2004 zoj2201 | 5 | 5 |
| | E | To and Fro | East Central North America 2004,zoj2208 | 3 | 3 |
| | F | Least Common Multiple | East Central North America 2003, Practice | 3 | 14 |
| | G | Number Sequence | Zhejiang Provincial Programming Contest 2004 | 3 | 7 |
| | H | Goldbach's Conjecture | Ulm Local 1998 | 8 | 13 |
| | I | Steps | Waterloo local 2000.01.29 | 6 | 16 |
| | J | Soundex | Waterloo local 1999.09.25 | 5 | 6 |
| | K | Biorhythms | East Central North America 1999; Pacific Northwest 1999 | 5 | 13 |
| | L | Numerically Speaking | 1997-98 North Central Regionals | 1 | 1 |
| | M | Integer Inquiry | East Central North America 1996 zjo1292 | 1 | 15 |
| | N | Round and Round We Go | Greater New York 2001 | 6 | 7 |
| | O | Octal Fractions | Southern African Regional 2001 | 4 | 4 |
| | P | Niven Numbers | East Central North America 1999, Practice | 3 | 6 |