they asked for f2f, but after 1.5 hour of waiting, they asked for a written test which involved core python functional programming questions provided I work in R and the option was not there.Then cutoff was 6 as there were 200 person(but they said its a scheduled drive).

I had a virtual interview with just one candidate. The questions were fairly simple, mostly asking for definitions. I answered everything, yet I was still rejected. I can't help but wonder if they had already made up their minds beforehand.