From the following options given below, the problem that is not an optimisation problem is
We are given a set of problems and we have to identify which among them is not an optimisation problem.
When we represent these problems mathematically, if we are interested in maximizing or minimizing any of the functions or variable, we call such problems optimization problems.
Maximising profit, minimising cost and minimising area are such problems. In finding area, we are just calculating something, we are not interested in maximising or minimising area.
So it’s not an optimisation problem