Apple

I was told to have the interview on campus after a career fair. I had interviews with two people from different teams. The first person asked me many questions about my previous experiences, like what things I had done in the past. Then he asked me

Can you describe a complex technical problem you solved in a previous project? What approach did you take to tackle the problem, and what was the outcome of your project?

After the normal greeting, I was asked a technical question. Then I was asked a problem: How do you test the prototype of the vending machine? If the vending machine takes a $1 bill and gives a 75-cent product, but it doesn't give out change. How