when i first read through it, the section on dividing and using fractions mod n kind of confused me. those are a little more complex than the basic mod n problems. i just wasn’t quite sure how exactly to do it, but i think that i will understand it if i practice doing it a little bit.
i remember when i first learned about modular arithmetic: i was so confused! but once i got the hang of it, i actually kind of liked it. i’m still not 100% comfortable with it, but i do enjoy doing some of the basic problems. it’s a pretty cool concept.
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