Answer:
The set of the number of days that a year can have.
Step-by-step explanation:
It is possible to have many examples that satisfy this description, but an example is:
- The set of the number of days that a year can have.
Let A be the set of the number of days that a year can have, the subsets are 365, and 366 (Leap Year)
So, A = {365, 366}.