Using the Fundamental Counting Theorem, there are 20 possibilities for their big night out.
<h3>What is the Fundamental Counting Theorem?</h3>
It is a theorem that states that if there are n things, each with
ways to be done, each thing independent of the other, the number of ways they can be done is:

For this problem, we have that:
- There are 5 restaurants, hence
.
- There are 4 stores, hence
.
The number of possibilities is given by:
N = 5 x 4 = 20.
More can be learned about the Fundamental Counting Theorem at brainly.com/question/24314866
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