1. I thought that these sections were both very interesting and cool. They will be extremely helpful when it comes to larger numbers; there are some really cool shortcuts! There were a couple things that I didn't understand, specifically the example on page 77 about the x^2=1 (mod 35) I just didn't understand how they got to the answers of 6,29, and 34, but I felt like I understood until then. I will read it again and write it out. The next example that I thought that I understood but didn't towards the end was the example on pg 79 with the modular exponentiation, I think that they're just doing it mod 789, but I didn't know if we were using a calculator here or this was all just coming from our heads, in that case it might take a little longer... I just wasn't sure.
2. Like I said before, these sections were really cool. I really liked how they gave us an opportunity for shortcuts when it came to larger numbers, and they are just really useful theorems and examples that will definitely come in use!
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