12 Days of Christmas
174
Abundant Numbers
718
Card Number Validation
618
Collatz
840
Day of Week
810
Evil Numbers
755
Evil Numbers (Long)
745
Fibonacci
610
Fizz Buzz
611
Fractions
689
Leap Years
705
Niven Numbers
721
Niven Numbers (Long)
794
Odious Numbers
702
Odious Numbers (Long)
695
Prime Numbers
563
Prime Numbers (Long)
603