12 Days of Christmas
2,766th
Arabic to Roman
1,731st
Divisors
3,889th
Emirp Numbers
2,037th
Evil Numbers
4,547th
Fibonacci
9,283rd8,785th7,976th9,095th8,773rd9,008th9,177th8,952nd9,044th6,810th8,964th
Fizz Buzz
7,903rd
Happy Numbers
2,145th
Leap Years
748th
3,480th
Morse Decoder
836th
Morse Encoder
765th
Niven Numbers
3,626th
Odious Numbers
3,818th
Pernicious Numbers
3,081st
Prime Numbers
4,992nd
Roman to Arabic
1,141st
Seven Segment
893rd