An airplane as a capacity of 23 passengers. The airline knowning that 10% of passengers who have reserved a seat do not show up at boarding. Thus the airline always accept more reservation then available place.

1- What is the probability that all passenger that show up for boarding can get a seat if the company as accepted 25 reservation.

2- If we have 3 flight per day, what is the probability that for each flight all passengers that show up can have a seat. We suppose that 25 reservations were made for each flight.

Tks for the help.