How many ways can 5 paintings be lined up on a wall?

120 different ways.

Step-by-step explanation:

We would use a factorial to solve this problem. That just means that we would multiply the first number (5) by the number behind it (4), and that number by the number behind it (3), and so on. Get it?

Look:

5! = 5*4*3*2*1 = 120.

And so our answer is 120! :)

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120

Step-by-step explanation:There are 5! = 5*4*3*2*1 = 120 different ways to hang the paintings.