In analyzing hits by certain bombs in a war, an area was partitioned into 573 regions, each with an area of 0.85 km2. A total of 535 bombs hit the combined area of 573 regions. Assume that we want to find the probability that a randomly selected region had exactly three hits. In applying the Poisson probability distribution formula, P(x)= xe x!, identify the values of , x, and e. Also, briefly describe what each of those symbols represents.

Identify the values of , x, and e.