12 Days of Christmas
80
Abundant Numbers
690
Card Number Validation
493
Collatz
704
Day of Week
648
Evil Numbers
755
Evil Numbers (Long)
745
Fibonacci
610
Fizz Buzz
558
Fractions
585
Leap Years
705
Niven Numbers
721
Niven Numbers (Long)
794
Odious Numbers
702
Odious Numbers (Long)
695
Prime Numbers
563
Prime Numbers (Long)
603