12 Days of Christmas
28th
Arabic to Roman
70th
Divisors
112th983rd40th
Emirp Numbers
49th
Evil Numbers
1,038th57th
Fibonacci
183rd1,271st106th
Fizz Buzz
219th
91st
Happy Numbers
49th
Leap Years
53rd
Morse Decoder
17th
Niven Numbers
49th
Odious Numbers
52nd
Pascalβs Triangle
57th
Pernicious Numbers
53rd
Poker
9th
Prime Numbers
74th
Quine
72nd
Spelling Numbers
75th