Final answer:
To write "spartan" in just 6 characters, use "spartn".
Step-by-step explanation:
To write "spartan" using just 6 characters, you can use the word "spartn". By removing the last two letters, you can still convey the meaning of the word in a shorter form. It is important to note that this abbreviation may not be universally understood, so it is best to use it in a context where the meaning is clear.
Learn more about abbreviating words