12 Days of Christmas
28th
Arabic to Roman
83rd
Divisors
128th1,088th44th
Emirp Numbers
52nd
Evil Numbers
1,159th62nd
Fibonacci
204th1,451st135th
Fizz Buzz
234th
99th
Happy Numbers
53rd
Leap Years
55th
Morse Decoder
18th
Niven Numbers
56th
Odious Numbers
55th
Pascal’s Triangle
61st
Pernicious Numbers
62nd
Poker
12th
Prime Numbers
83rd
Quine
78th
Spelling Numbers
94th