Abundant Numbers
968th
Arithmetic Numbers
791st
Card Number Validation
576th
Catalan Numbers
931st
Christmas Trees
907th
Collatz
1,199th
CSS Colors
727th
Day of Week
383rd
Emirp Numbers
1,877th
Emirp Numbers (Long)
885th
Evil Numbers
2,738th
Fizz Buzz
126th
Leap Years
721st
Niven Numbers
2,540th
Pangram Grep
1,396th
Prime Numbers
2,533rd
Tongue-twisters
1,644th