Mix Up and
In reference to intearcting and mingling with people what is correct?
Do they mean the same or different and which one is more appropriate and Why?
Mix around suggests the kind of thing you might do with ingredients when making a cake.
To mix up means to get 2 or more things confused with eachother.
To mix simply means to combine things.
If you were at a party or a social gathering, you would be able to say that you "mixed with various different people at the party".