Hi, this really all depends on who you are talking to. What's up? What's up can mean "what are you doing" or slang for "hey hows it going" or in some cases people will say "what's up?" if they missed the topic of a conversation. Answer: nothing much, what about you? How is it going? How is it going is cut and dry asking how life, work, your current activity, or what ever "it" may be is going. Answer: It going great! how about you? How you doing? How you doing is grammatically incorrect unless you are on the streets of compton in which case it becomes "how you doin" meant to be pronounced with a bit of an accent and preferably a XXXL shirt and low riding pants. Answer: no I dont want any drugs right now, thank you. Did you find every thing fine? Again incorrect, I believe most of the time you will hear did you find everything "ok" Answer: Yes thank you or No do you have ______? How do you do? How do you do is simply asking how are you doing Answer: im doing fine, thank you

What's up? A: Nothing much. How is it going? A: It is going well. Ok. How you doing? A:I am tired. Happy.. emotion, Did you find every thing fine? A: yes or no. No, It was difficult. Yes, it was easy to find. How do you do? A: I am good. How do you do?