Is it worth it? Is it accurate (questions by prevalence and company)?
Highly recommended incase you are interviewing
Totally
Only take if after completing Top100 interview questions and Top100 Liked Question. That should atleast get you through LinkedIn and Amazon interviews. I cleared Amazon with that and answered all Google and FB questions. The trick then is to work on speed.
Elon Musk deleted Facebook and move to LinkedIn
yes
Yes to both questions?
yes