This is e-TeX, Version 3.14159-2.1 (Web2C 7.4.5)
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LaTeX2e <2001/06/01>
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Document Class: article 2001/04/21 v1.4e Standard LaTeX document class
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For additional information on amsmath, use the `?' option.
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! LaTeX Error: \begin{enumerate} on input line 24 ended by \end{document}.

See the LaTeX manual or LaTeX Companion for explanation.
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l.55 \end{document}
                   
[1] (./7.aux) )
(\end occurred inside a group at level 1)

### semi simple group (level 1) entered at line 24 (\begingroup)
### bottom level
(see the transcript file for additional information)
Output written on 7.dvi (1 page, 3488 bytes).
Transcript written on 7.log.