12 Days of Christmas
29th
Abundant Numbers
65th
Card Number Validation
12th
Evil Numbers
50th
Evil Numbers (Long)
31st
Fibonacci
123rd
Fizz Buzz
566th109th230th71st270th1,054th202nd2,198th169th57th
Foo Fizz Buzz Bar
51st
79th230th
Leap Years
69th
105th273rd
Odious Numbers
40th
Odious Numbers (Long)
27th
Tongue-twisters
28th