four girls bought each a swimsuit and decided to borrow among themselves. How many possible ways can they dress up knowing that each girl can use the same swimsuit only once?
4! = 24
To determine the number of possible ways the four girls can dress up, we can use the concept of permutations.
Initially, each girl has a swimsuit of her own. So, we have 4 swimsuits in total. The first girl has 4 options to choose from (her own swimsuit), the second girl has 3 options (3 remaining swimsuits), the third girl has 2 options (2 remaining swimsuits), and the fourth girl has 1 option (only 1 swimsuit left).
To calculate the total number of ways, we multiply the number of options for each girl:
4 * 3 * 2 * 1 = 24.
Therefore, there are 24 possible ways for the girls to dress up by borrowing the swimsuits among themselves.