I am currently in an Algorithms Analysis class, and we are currently on Dynamic Programming & Divide and Conquer. i am supposed to solve these questions in ways that relate the current topics, but I do not even know how to interpret these questions, can someone help me understand how I am supposed to know what to do?

I am not directly looking for the answer, but if one is provided that is ok; as long as you explain how I am supposed to interpret the question. Thanks!

Questions:

1) Suppose that you are a software engineer who is working on design of an inflight entertainment system with on-demand movie streaming. Users on longer flights like to start each movie right when their previous one ends, but they complain that the plane usually lands before they can see the ending. So you need to build a feature for choosing movies whose total runtimes will equal the exact flight length.

2) Can a kingdom in which 7 roads lead out of each city and roads intersect only in cities have exactly 270 roads?