Question

How many ways can 4 paintings be lined up on a wall

Answer 1

There are 5

Step-by-step explanation 5!= 5*4*3*2*1 = 120 different ways

Answer 2

There are 24 different ways to hang 4 paintings on a wall

Explanation:

For any basic occurrence of any item we use the factorial of that number. In other words factorial is the fact that there are n! ways to arrange n distinct objects into a sequence.

Since we are given with 4 items so their occurrence can be written as 4! which equals 4x3x2x1 = 24