You use a question mark because it's a question. You are asking them how they are doing.
Most greetings are not a question and do not call for a question mark. But sometimes you want to say hello, who is there? In that case you do use a question mark. If you are saying hello to someone and you do know who that person is, then it is not a question. Hello Mark, good to see you. You may also ask, how are you? That is kind of a greeting but it is really more of a pleasantry or general conversation, rather than a greeting. If you ask "how are you?" but you don't really want to know the answer to the question, it's just a nice thing to say, then it qualifies as a greeting with a question mark.
no its a question because its got a question mark on the end
When you're asking a question. "Are you having a good morning?" But if that's your way of greeting someone, it would be "Good morning."
Question mark (?) is put at the end of a sentence to indicate that it is a question.
what punctuation mark placed after a greeting in email
tick (put a mark in the box) the correct greeting.
No. it's not necessary to put a period after a question mark.
No, a question mark alone is sufficient.
you put an upside down question mark in the beginning and then a regular question mark at the end. Example: ¿Donde esta? The way to do a updside down question mark when typing is: SHIFT+CTRL+ALT+?
out
at the end
A question mark (?)