Memory is very important and if you can´t focus because of ADD / ADHD it´s bad. I´ve worked with college students they studied robotics, advance math, statistic, programming and when i gave them something simple to do, they cold not figure out how to do it and they made so many mistakes all the time. I couldn´t understand how people who are dumb as fuck could study such hard staff.
But mostly they use their good memory. It help even with math. I remember when i was preparing for math test. I downloaded book our professor recommended where you had to solve math problems similar we will get on test. I tried to solve many of them in this book, even same problem twice to be sure that i´m going to make it easy peasy. What happened on the test? I totally forgot how to solve it so I tried to figure it out the same way i did at home and when i knew i did a mistake i did it over and over again during test to figure it out. But no use i run out of time. It´s not that hard to understand but hard to remember. If you remember the patterns its much easier after.
Reeeeeeeeeeeeeee