Checkpoint: The Fundamental Counting Principle Solution

How many ways can you arrange The Limit Does Not Exist, The Integral of Intrigue, and The Derivative of Deception on a bookshelf?

$\begin{matrix} n = 3 \\ 3 & 2 & 1 \\ n & n - 1 & n - 2 \end{matrix} 3! = 3 \cdot 2 \cdot 1 = 6$

There are 6 ways to arrange three books on a bookshelf.

Note

Q: If one additional book was added, why would you not want to list all the possible arrangements?

A: Because adding one more book results in 24 possible arrangements.