There are seven members of a jazz club who are listed below. A concert director can choose some or all of them to be part of a l
arge show. He must choose at least one of them
Carol, Felix, Gina, Joe, Kate, Noe, Rose
In how many different ways can the director choose the members for the show? (The order the members are chosen doesn't matter.)
The concert director can choose the new members by holding try outs to take the the possible candidate’s skills, performance and professionalism into consideration to be a part of the large show. Another way is by voting amongst other people in their school to see who the audience would be excited to see preforming in the show.
and 
, so the sum is equal to