Find the indicated probabilities using the geometric$$ distribution, the Poisson$$ distribution, or the binomial distribution. Then determine if the events are unusual. If$$ convenient, use the appropriate probability table or technology to find the probabilities.

Assume the probability that you will make a sale on any given telephone call is $0\mathrm{.}13.$ Find the probability that you$($a$)$ make your first sale on the fifth$$ call, $($b$)$ make your sale on the$$ first, second, or third$$ call, and$($c$)$ do not make a sale on the first three calls.