Question

Give an example of of a function whose domain is the set of all states in the US and whose range is 1, 2, and 3.

Answer 1

you need to define a function that takes "state" as input and returns either 1, 2 or 3

Answer 2

in other words, come up with a reason to assign 1, 2 or 3 to a state. It will probably be a goofy reason (I can't think of a good one), but that does not matter