Sarin Technologies interview questions

I came to the office, they greeted me nicely and i had to fill a questionaire, and add 3 recommendations. then I had a test about linear algebra and computational geometry(oral test), after which I had a talk about myself, and the aspects of the job.

two rounds of interview for technical, then is the Hr round and its most done, then is the Hr round and its most done.two rounds of interview for technical, then is the Hr round and its most done, then is the Hr round and its most done.