Tech Mahindra Software Developer interview questions

I had a call first that my resume is shortlisted. I wrote an online exam.then attended a telephonic round was selected in both ....Then i was asked to pay money.for which I refused because according to the companies law it was against the company .... Because it was in the official site of tech mahindra ..That they don't charge any money for any kind of interview.

I attend tech Mahindra drive in our college. On campus, it is medium and first round is written, second round technical and third one hr. The first round consists of 7 section each section carries 10 marks and having a sectional cutoff of 8 marks for each section. The second round is essay writing they will give picture or topic based on the given topic or picture you have to write a paragraph then, coming to the third round technical round I am from ECE background TR asked all the ECE core questions like what is modulation, demodulation, and questions on ECAD, PDC etc and final round HR it is not easy or difficult, it is an average experience.