There are 5 machines each of which when running suffers breakdown at an average rate of 2 per hour. There are 2 servicemen and only one man work on a machine at a time. If ‘n’ machine are out of order when n > 2 then (n – 2) of them wait until a service man is free. Once a serviceman starts work on a machine the time to complete the repair has an exponential distribution with mean of 5 minutes. Find the distribution of the number of machines out of action at a given time. Find also the average time an out-of-action machine has to spend waiting for the repairs to start.

Have you ever been in the middle of telling a story and had to use hand gestures or even a drawing to make your point? in algebra, if we want to illustrate or visualize a key feature of a function, sometimes we have to write the function in a different form—such as a table, graph, or equation—to determine the specific key feature we’re looking for. think about interactions with others and situations you’ve come across in your own life. how have you had to adjust or change the way you represented something based on either the concept you were trying to describe or the person you were interacting with? explain how the complexity or layout of the concept required you to change your style or presentation, or how the person’s unique learning style affected the way you presented the information.