12 Days of Christmas
28th
Arabic to Roman
68th
Divisors
111th967th40th
Emirp Numbers
49th
Evil Numbers
1,015th56th
Fibonacci
177th1,246th105th
Fizz Buzz
217th
91st
Happy Numbers
48th
Leap Years
53rd
Morse Decoder
17th
Niven Numbers
48th
Odious Numbers
51st
Pascalβs Triangle
57th
Pernicious Numbers
53rd
Poker
9th
Prime Numbers
74th
Quine
72nd
Spelling Numbers
73rd