Could use some help with this probability problem. Thank you in advance. The probability that a concrete bridge will fail by seismic and overload events. Also, the probability that no more than one bridge will fail by an extreme flood event in any given year, and lastly, The probability that more than two bridges will fail by an extreme flood event in any given year.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.