I just started the 2 month plan and found what seems to be a mismatch between the content covered in the assigned PrepSwift videos and the homework. One of the homework assignments for PrepSwift users is Chapter 13 of the Manhattan 5lb book that covers divisibility and primes. This chapter heavily uses LCM, GCM, prime factorization and other topics not covered in day 1. These topics are; however, covered in day 2. Am I missing something here? I feel like I am being asked to practice content I have not yet learned.
It says that they are optional, though? And this is a reason why.