12 Days of Christmas
900
99 Bottles of Beer
663
Abundant Numbers
761
Abundant Numbers (Long)
917
Arabic to Roman
681
Arithmetic Numbers
845
Ascending Primes
261
Catalan Numbers
702
Collatz
900
Divisors
984
Evil Numbers (Long)
799
Fibonacci
935
Fizz Buzz
945
Happy Numbers
682
Happy Numbers (Long)
744
ISBN
626
Prime Numbers
701