Arabic to Roman
670
Arrows
507
Card Number Validation
743
Christmas Trees
537
763
Collatz
900
Cubes
508
Emirp Numbers
628
Fibonacci
511
428
Fizz Buzz
703
Leap Years
731
ln 2
779
Morse Encoder
665
Prime Numbers
633
Roman to Arabic
321
Transpose Sentence
737
United States
Zeckendorf Representation
846
τ
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