Question 48: Determine the format of the following products: \(\overline {abc} .7.11.13\)

\(\overline {abc} .7.11.13 = \overline {abc} .1001\)

\(=\overline {abc}.(1000+1)\)

\(=\overline {abc}.1000+\overline {abc}.1\)

\(=\overline {abc000}+\overline {abc}\)

\(= \overline {abcabc}\)

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