Abundant Numbers
737th
Arithmetic Numbers
614th
Card Number Validation
540th
Catalan Numbers
939th
Christmas Trees
798th
Collatz
801st
CSS Colors
813th
Day of Week
352nd
Emirp Numbers
1,704th
Emirp Numbers (Long)
814th
Evil Numbers
2,639th
Fizz Buzz
22nd
Leap Years
642nd
Niven Numbers
2,539th
Pangram Grep
1,176th
Prime Numbers
2,349th
Tongue-twisters
1,562nd