Find the indicated probabilities using the geometric distribution or Poisson distribution. Then determine if the events are unusual. If convenient, us a Poisson probability table or technology to find he probabilities.

A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During the last century, the men number of major hurricanes to strike a certain country's mainland per year was about 0.6. Find the probability that in a given year (a) exactly one major hurricane will strike the mainland, (b) at most one major hurricane will strike the mainland, and (c) more than one major hurricane will strike the mainland.