Python

Question

Dear moderators & users

My question is little bit long ,so use the provided link for question

I've solved some of the parts but
I didnt know how to solve number 9 and 10 In part E and 8 and 12 in part F
Your hints will be helpful for me
Thanks for your help

https://code.sololearn.com/co1e14h0uBj9/?ref=app