A temporary flood wall has been constructed to protect several homes in the floodplain. the wall was built to withstand any discharge up to the 20-year period after all the homes have been relocated. The wall will be removed after a 3 year period after all of the homes have been relocated. Determine the probabilities of the following events:
(a) The wall will be overtopped in any year.
(b) The wall will not be overtopped during the relocation operation.
(c) the wall will be overtopped at least once before all the homes are relocated.
(d) The wall will be overtopped exactly once before all the homes are relocated.
(e) The wall will be adequate for the first 2 years and then overtopped in the third year.