- 001 - Multiples of 3 and 5
- 002 - Even Fibonacci numbers
- 003 - Largest prime factor
- 004 - Largest palindrome product
- 005 - Smallest multiple
- 006 - Sum square difference
- 007 - 10001st prime
- 008 - Largest product in a series
- 009 - Special Pythagorean triplet
- 010 - Summation of primes
- 011 - Largest product in a grid
- 012 - Highly divisible triangular number