Răspuns :
[tex] \overline{1998abc}\;\vdots\;231\;!\\
\rightarrow\;1\,000\,000\,\le\;M_{231}\,\le\,1\,999\,999\\
\rightarrow\;1000000:231\approx4329\\
si\;\;\;\;1999999:231\approx8658\\
deci\;numerele\;vor\;fi:\\
\overline{1998abc}=\{4330*231; ...;8658*231\}[/tex]
\rightarrow\;1\,000\,000\,\le\;M_{231}\,\le\,1\,999\,999\\
\rightarrow\;1000000:231\approx4329\\
si\;\;\;\;1999999:231\approx8658\\
deci\;numerele\;vor\;fi:\\
\overline{1998abc}=\{4330*231; ...;8658*231\}[/tex]
