If we have a constant force that acts on a body in the same direction as the displacement , then the work is defined as the product of the force magnitude and the displacement magnitude . In other words:
, which is valid for a constant force in direction of straight-line displacement.
The question is based in pigeonhole principle that says If n or more pigeons are distributed among k >0 pigeonholes,then at least one pigeonhole contains at least pigeons.