2:1

It seems like you might be referring to a 2:1 ratio, which is often used in various contexts such as academics, sports, or statistical data. In the context of university exams and grading, a 2:1 typically refers to a classification of a degree in the UK education system.

A 2:1, or Upper Second-Class Honours, is a level of achievement that denotes a good understanding of the subject and is usually awarded to students who achieve grades between 60% to 69%.

If you have a specific question or topic related to a 2:1 grade or something else that you need help with, please provide more details!