12 Days of Christmas
30th
Arabic to Roman
75th
Divisors
124th1,072nd49th
Emirp Numbers
49th
Evil Numbers
1,135th60th
Fibonacci
197th1,399th132nd
Fizz Buzz
230th
103rd
Happy Numbers
52nd
Leap Years
56th
Morse Decoder
17th
Niven Numbers
55th
Odious Numbers
54th
Pascal’s Triangle
58th
Pernicious Numbers
59th
Poker
9th
Prime Numbers
80th
Quine
77th
Spelling Numbers
83rd