12 Days of Christmas
29th
Arabic to Roman
57th
Divisors
107th
894th
47th
Emirp Numbers
48th
Evil Numbers
923rd
55th
Fibonacci
164th
1,114th
100th
Fizz Buzz
198th
92nd
Happy Numbers
46th
Leap Years
51st
Morse Decoder
14th
Niven Numbers
47th
Odious Numbers
50th
Pascalβs Triangle
56th
Pernicious Numbers
51st
Poker
8th
Prime Numbers
72nd
Quine
67th
Spelling Numbers
62nd