Beethoven wrote nine symphonies and Mozart wrote
If the local radio station KALG wants to play two pieces, a Beethoven symphony and then a Mozart concerto, in how many ways can this be done?
The station manager has decided that on each successive night (seven days a week), a Beethoven symphony will be played, followed by a Mozart concerto, followed by a Schubert string quartet (there are
of those). How long could this policy continue before exactly the same program would have to be repeated?
Combine the ways of part (a) with the
Schubert string quartets.