Does anyone know roughly where the Medium and Hard questions for DS and PS questions in the 2016 OG book are? I'm trying to aim more focus towards those questions but I'm not exactly sure where they start. I do realize that medium and hard are subjective as everyone has different strengths but roughly would help in my studies.
The questions in the OG are arranged in order of difficulty (from easiest to hardest)
Cheers,
Brent



















