Barber Calls

Author:: Steve Phelps

Topic:: Random Experiments, Random Variables, Statistical Characteristics, Statistics, Stochastic Process or Random Process

My barber has four barbers that work there. I have been going to this barber for over a year now. I call to see if they have an opening, but there is one barber I have never had cut my hair. So I was wondering... Assuming when I call, any one of the barbers will answer. How may calls do I need to make so each barber will answer, and hence, cut my hair?

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