I prepared a tutorial on Mobius Inversion and multiplicative functions, with some problems.
I tried to make it as such that it doesn’t need any prerequisite about the mathematics involved behind it.
Link : Video
Slides are also attached in description if you prefer reading through text, than watching a video.
Since, this is my first video, ignore the mumbling and any constructive criticism are welcome.
PS : I shared this on codeforces yesterday, but since most of Indian community is not on codeforces, so I am sharing this here too