In analyzing hits by certain bombs in a war, an area was partitioned into 574 regions, each with an area of 0.25 km2.

A total of 535 bombs hit the combined area of 574 regions. Assume that we want to find the probability that a randomly selected region had exactly two hits. In applying the Poisson probability distribution formula, P(x)=xex!,

identify the values of ,x, and e.

Also, briefly describe what each of those symbols represents.