12 Days of Christmas
30th
Arabic to Roman
72nd
Divisors
118th1,032nd48th
Emirp Numbers
49th
Evil Numbers
1,091st58th
Fibonacci
190th1,343rd112th
Fizz Buzz
227th
100th
Happy Numbers
51st
Leap Years
55th
Morse Decoder
16th
Niven Numbers
53rd
Odious Numbers
53rd
Pascal’s Triangle
57th
Pernicious Numbers
56th
Poker
9th
Prime Numbers
78th
Quine
74th
Spelling Numbers
78th