A fan of country music plans to make a custom cd with 11 of her 27 favorite songs. how many different combinations of 11 songs are​ possible? is it practical to make a different cd for each possible​ combination?

Respuesta :

This is equivalent to asking in how many ways you can choose 11 from an available 28 and is hence the combination

28^Cv11=28!

             (28−11)!11! 

=21474180