Hello,
I just completed the Manhattan SC book. After each chapter I did the exercises and did well on the exercises. I was also confident that I understood all the concepts discussed in the book. However, when i tested my skills on problems from the OG, I got a lot of questions wrong. Before using Manhattan SC guide i answered questions from the OG and i scored better on exercises I completed prior to using the Manhattan guide. I am worried about this and would like to know how to improve on my SC score