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The sales representative makes presentations about a product in three homes per day.
\The sales presentations outcomes are as follows
\SFF = Sale at one home and no sale at two homes
\SSF = Sale at two homes and no sale at one home
\SFS = Sale at one home, no sale at one home and sale at other home
\SSS = Sale at three homes
\FSS = No sale at one home and sale at two homes
\FFS = No sale at two homes and sale at one home
\FSF = No sale at one home, sale at one home and sale at the other home
\FFF = No sale at three homes.
\The sample space is {SFF, SSF, SFS, SSS, FSS, FFS, FSF, FFF}.