12 Days of Christmas
28th
Arabic to Roman
76th
Divisors
125th1,066th41st
Emirp Numbers
49th
Evil Numbers
1,137th60th
Fibonacci
197th1,404th131st
Fizz Buzz
230th
98th
Happy Numbers
52nd
Leap Years
55th
Morse Decoder
17th
Niven Numbers
54th
Odious Numbers
54th
Pascal’s Triangle
58th
Pernicious Numbers
59th
Poker
9th
Prime Numbers
79th
Quine
77th
Spelling Numbers
87th