12 Days of Christmas
173
Abundant Numbers
707
Card Number Validation
588
Collatz
821
Day of Week
775
Evil Numbers
741
Evil Numbers (Long)
726
Fibonacci
602
Fizz Buzz
606
Fractions
667
Leap Years
695
Niven Numbers
709
Niven Numbers (Long)
775
Odious Numbers
687
Odious Numbers (Long)
675
Prime Numbers
552
Prime Numbers (Long)
586