12 Days of Christmas
28th
Arabic to Roman
71st
Divisors
115th1,003rd40th
Emirp Numbers
49th
Evil Numbers
1,058th58th
Fibonacci
184th1,300th109th
Fizz Buzz
223rd
92nd
Happy Numbers
49th
Leap Years
54th
Morse Decoder
17th
Niven Numbers
51st
Odious Numbers
53rd
Pascal’s Triangle
57th
Pernicious Numbers
54th
Poker
9th
Prime Numbers
75th
Quine
74th
Spelling Numbers
76th