12 Days of Christmas
124th
Abundant Numbers
10th
Abundant Numbers (Long)
2nd
Arithmetic Numbers
9th
Divisors
66th
Evil Numbers
99th
Evil Numbers (Long)
70th
Fibonacci
304th
Fizz Buzz
503rd
Foo Fizz Buzz Bar
14th
Leap Years
74th
Medal Tally
18th
Niven Numbers
116th
Odious Numbers
81st
Odious Numbers (Long)
55th
Pernicious Numbers
68th
Pernicious Numbers (Long)
31st
Prime Numbers
89th
Tongue-twisters
43rd