Witch company. First time interview for me. That was crazy

So I was interviewed for a witch company role. The package was around 4.5 lpa. My classmates were sharing their interview experience and the questions that were asked in the interview and it was on campus placement. I finally prepared all the HR questions, technical questions and project, internship etc. and my interview was gone in vain. I was shocked with those questions. those were very out of the box questions and I did not expect them. I was interviewed by a associate managers so the interview went for like 10 minutes fr.

I told my intro and challenges I faced in project et cetera so he asked me two questions and I was shocked listening to these questions.

  1. He asked me, "How many airplanes are flying from Indian airports in an hour?" — without using the internet.

  2. He asked, "How many people will buy mobile phones this month in your society? I need a concrete number."

  3. Any other questions? That's it.

I was just listening to the questions for the first question I was like how can we say without an Internet I don't know the answer so I was not able to answer the first question and the second question I said like it depends from the person to person and he said tell me a percentage and I said 30% and he was like why not other 70%. I told it depends from the person to person. They might have financial issues or they are happy with their current phone. And he is like can you guarantee that everyone in India are having this issues. And then I ask some questions to the interviewer and the interview was completed. I also learnt some great tips from him on what to speak in interview and how to answer some questions in an interview.

This was my first interview and also an unusual one for me. If anyone knows how to answer these questions and knows the answer please post it here and also share your thoughts