Overall, it was an excellent interview process! I had applied through my school's career pages and received an invitation with initial assessment. After the assessment, we had a brief behavioral + math flow question. It's the same math flow found here. Make sure you understand the problem! Not just memorize the solution. You need to be articulate in your response, and show your analytical mindset. After few weeks, I got an email for on-site interview. We had another math flow problem, which is given to you before your interview (same question, different numbers). Take this as your opportunity to practice! For the on-site interview, they will ask you the same math flow problem, but they will add in a twist. This is why it's important to understand the problem, not just memorize it. Be sure to jot down your calculations in an organized manner, and explain your thought process.