What is the question you are trying to ask?
all social media's but i won't use all social media only whatapp
Explanation:
Letters are any of the 26 letters featured in the alphabet
Characters on the other hand can include all alphabetical letters however it DOES include symbols such as ,*/,?, etc. It can include numbers, underscores, dashes and emoticons as well.
<span>The statement within a paragraph that provides the central idea is called a topic sentence </span>