How many different ways can 5 books be stacked
The number of different ways 5 books can be stacked can be calculated using factorial notation. The number of ways to stack the books can be expressed as 5! (read as "5 factorial") which is equal to 5 x 4 x 3 x 2 x 1 = 120.
Therefore, there are 120 different ways to stack 5 books.