How can I show the fifth elements (f.e.) in a select

I want to display the last elements of a table. For example, the last fifth elements. I have a field called id, and the elements are ordered by the id. I use order by, but the select display me all the elements, not only the fifth last elements.
I don't know how can I display the last id's.
Thanks

Like this?
SQL> select empno
2       , ename
3    from emp
4   order by empno
5 /
                                 EMPNO ENAME
                                  7369 SMITH
                                  7499 ALLEN
                                  7521 WARD
                                  7566 JONES
                                  7654 MARTIN
                                  7698 BLAKE
                                  7782 CLARK
                                  7788 SCOTT
                                  7839 KING
                                  7844 TURNER
                                  7876 ADAMS
                                  7900 JAMES
                                  7902 FORD
                                  7934 MILLER
14 rijen zijn geselecteerd.
SQL> select empno
2       , ename
3    from ( select empno
4                , ename
5                , row_number() over (order by empno desc) rn
6             from emp
7         )
8   where rn <= 5
9   order by empno
10 /
                                 EMPNO ENAME
                                  7844 TURNER
                                  7876 ADAMS
                                  7900 JAMES
                                  7902 FORD
                                  7934 MILLER
5 rijen zijn geselecteerd.Regards,
Rob.

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: : How can I limit the number of rows returned by a select
: : statement. I have a query where I return the number of
: stores
: : that are located in a given area.. I only want to return the
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How can I show the fifth elements (f.e.) in a select

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