Question
Classify the number $7.478478..... $ as rational or irrational.
✓
Answer
7.478478..... = $7.\overline{478}$
$\because$ The decimal expansion is non-terminating recurring.
$\therefore$ $7.478478......$ is a rational number.
$\because$ The decimal expansion is non-terminating recurring.
$\therefore$ $7.478478......$ is a rational number.
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