Q1. A toy problem is intended to illustrate or exercise various problem-solving methods. It can be given a concise, exact description and hence is usable by different researchers to
compare the performance of algorithms. A real-world problem is one whose solutions
people actually care about. Such problems tend not to have a single agreed-upon
description, but we can give the general flavor of their formulations. Think of two unique
toy problems and two unique real world problems and describe them in two lines.