In a non-empty list, there must be exactly one list item with no successor.

Name: In a non-empty list, there must be exactly one list item with no successor.
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Quizplus · Accepted Answer

This is known as the "tail" or the last element of the list, and it has no successor. If there are multiple items with no successor, then the list is not properly constructed. If there are no items in the list, then the statement does not apply.

In a Non-Empty List, There Must Be Exactly One List