Is python with pandas, numpy and matplotlib is enough to solve data science projects
Brain is missing in your list... But yes it is enough
Depends on what you mean by "Data Science". Data analysis (descriptive): yes. Machine Learning (predictive): no.
Look at the modules use in the sololearn course. If you need something else, you can install later
Oma Falk lol
We doesn't know your total requirements. So just start learning and when you will need to learn any other thing then you can simply learn it