NVIDIA ASIC Design Engineer Internship interview questions

Nvidia came to campus for job fair, they gave some question paper to solve, specific for the position that you are applying for. I applied for the Hardware Asic Position. I was givena Qn paper that had the following questions on it. Design some circuit using 2x1 mux only. Calculate the number of logic 1's in a given input using combinational logic only. Design a CMOS and gate And some basic logic based questions The questions were pretty much basic level. I got through to the second round and have selected for phone interviews which I believe will consist of 3 rounds. I will update how it went. Cheers ATB