### Home > A2C > Chapter 10 > Lesson 10.2.5 > Problem 10-126

10-126.

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.