A passenger airline company has found from experience that 10% of the customers who buy tickets for a flight do not show up for the journey. The company wishes to be at least 90% sure that a particular flight is at least 95% full. How many minimum tickets should it sell if the capacity of the flight is 300? If the answer to the above question is k tickets, what is the probability that some passenger(s) does(do) not get the seat?
