12 Days of Christmas
30th
Arabic to Roman
76th
Divisors
125th1,075th49th
Emirp Numbers
49th
Evil Numbers
1,138th60th
Fibonacci
197th1,404th132nd
Fizz Buzz
230th
103rd
Happy Numbers
52nd
Leap Years
56th
Morse Decoder
16th
Niven Numbers
55th
Odious Numbers
54th
Pascal’s Triangle
58th
Pernicious Numbers
59th
Poker
9th
Prime Numbers
80th
Quine
77th
Spelling Numbers
87th