posted a question
A beauty saloon employs three hairdressers. All customers get their hair washed in one area of the saloon before being taken to another area to get their hair cut. Customer arrival rate and service time follows the Poisson and exponential distributions, respectively. What is the Kendall notation for this system?

d) M/M/3

Also dealing with queuing systems: A queuing system has an arrival rate of 5 customers per hour and a service rate of 8 customers per house. What is the utilization factor of the system?
a) 40
b) 1.6
c) .625
d) 5