Can anyone tell me the difference between an open day and an interview for Economics / Maths? It says in the minority of cases that you will be offered an interview instead of an open day if you're a promising candidate but there is one aspect of your application that they find weaker than other candidates, and they will assess you on this.
However, I've heard that in reality they just invite you to see whether you're affable and have a passion for the subject, and to see that you have the minimum required level of intelligence? So if you do well in them, are you almost guaranteed an offer at the end of it?
Thanks.