Katelyn was asked to hang 4 student paintings in a row on the wall. How many different ways could she arrange them?
1 Answer
Mar 17, 2017
Explanation:
We can look at this by saying that Spot 1 for a painting can take any of the 4 paintings, so we have 4 choices.
Spot 2 then can take any of the 3 remaining paintings - so 3 choices.
Spot 3 can choose from the remaining 2 paintings - so 2 choices
Which puts the remaining painting in Spot 4 - and so 1 choice.
We can then multiply these together:
