Yes, if you are using the default editor (CKeditor) then the character count includes all the HTML that is generated behind the scenes. So in this paragraph there may be N number of characters that you see, but there is also a <p> and </p> tag in the HTML which adds to the characters.
You can either use less formatting to fit your answer in (colours, sizes and links make a lot more HTML) or use a different editor like plain text or Markdown.