Rohde & Schwarz Firmware Developer/Digital Hardware interview questions

I had to go for 2 rounds of interview First Round: - They conducted a technical test which last for 1hr 30mins. (Refer to the questions below) -After the first test I was interviewed by Technical Managers. Where they test me on my experience in programming & asked about projects I was involved. -On the same day I had to sit for another technical test where, they asked about Digital Logics. 2's complement, Truth table.. etc. -I was again interviewed by some Lab Heads, Department Managers & etc. -First Round interview took around 5 hours. Second Round: - They gave me another test for another position. Digital Hardware. It was a 30mins test. (Refer to the questions below). - After the test I was interviewed by another Lab Head where he asked irrelevant questions such as Find Center of gravity, velocity problem and prime number questions. After that there were some HR Managers and Department manager came to interview me.