Question

Period of decimal 0.729 bar

Answer 1

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Answer 2

$let \\ x = 0.729729... \: \: \: \: i\\ 1000x = 729.729 \: \: \: \: \: ii \\ substracting \: i \: from \: ii \\ \\ 1000x - x =7 29.729 - 0.729 \\ \\ 999x = 729 \\ \\ x = \frac{729}{999} \\ \\ x = \frac{81}{111}$