24 Game
4th
Abundant Numbers
19th20th
Abundant Numbers (Long)
19th
Arithmetic Numbers
12th
Arrows
9th
Ascending Primes
14th
Collatz
23rd
Day of Week
9th
Divisors
28th
Emirp Numbers
18th
Emirp Numbers (Long)
15th
Evil Numbers
43rd
Evil Numbers (Long)
38th
Factorial Factorisation
12th
Fibonacci
32nd
Fizz Buzz
40th
Foo Fizz Buzz Bar
10th
Happy Numbers
27th
Happy Numbers (Long)
27th
ISBN
28th
Leap Years
30th
Niven Numbers
28th
Niven Numbers (Long)
26th
Odious Numbers
31st
Odious Numbers (Long)
32nd
Pangram Grep
23rd
ROT13
7th
Transpose Sentence
16th
United States
5th