PUZZLER

Here's a list of words. What do they have in common? And for extra credit, suggest another word or two or more that might be added to the list.

Carbon

Mars

Four

Seventh

September

Saturn

Fifth

Here's a hint: The order of the words does not matter.

Answer:What each of these words has in common is that each has the number of letters that actually denotes its place on a list. For example, carbon has six letters and it is the sixth element in the periodic chart. Mars is the fourth planet in the solar system and has four letters. etc.