There are 5 staircases going from thr first to the second floor in school. Find the total number of ways that Andrea can go from the first floor to the second and then return to the first.

Thank you

I still don't know the answer :(

To find the total number of ways that Andrea can go from the first floor to the second and then return to the first, we can break down the problem into two steps:

Step 1: Count the number of ways to go from the first floor to the second.
Step 2: Count the number of ways to return from the second floor to the first.

Step 1: Counting the number of ways to go from the first floor to the second.
Since there are 5 staircases going from the first floor to the second, Andrea has 5 different options to choose from. Therefore, the number of ways to go from the first floor to the second is 5.

Step 2: Counting the number of ways to return from the second floor to the first.
Since Andrea needs to return to the first floor, she must choose one of the 5 staircases again. This means she has another 5 different options for her return trip. Therefore, the number of ways to return from the second floor to the first is also 5.

To find the total number of ways Andrea can go from the first floor to the second and then return to the first, we multiply the number of ways in each step together:
Total number of ways = Number of ways in Step 1 * Number of ways in Step 2
Total number of ways = 5 * 5
Total number of ways = 25

Therefore, Andrea can go from the first floor to the second and then return to the first in 25 different ways.