Question 2.59

29. The notes C, D, E, F, G, A, and B are to be used to form an ordered five-note musical logo. In how many ways can this be done under the following circumstances?

  1. No note can be repeated.
  2. Notes can be repeated.
  3. Notes can be repeated, but all the notes cannot be the same.

29.

(a) 2520

(b) 16,807

(c) 16,800