SOLUTION: Explain why the relation between your classmates and their email addresses may not be a function. What about phone numbers and Social Security Numbers?

Question 1112711: Explain why the relation between your classmates and their email addresses may not be a
function. What about phone numbers and Social Security Numbers?
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

Some of your classmates might have more than one email address. If so, then the relation between your classmates and their email addresses is not a function.

They can also have more than one phone number, so the relation between them and their phone numbers might not be a function.

But nobody should have more than one social security number, so the relation between your classmates and their social security numbers should be a function. If it is not, then there is some fraud going on....
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