Question
દર્શાવો કે : $0 . \overline{142857} =\frac{1}{13}$

Answer

ધરાવીએ $x=0 . \overline{142857}$
$x=0.142857142857$
પુનરાવર્તન ભાગ 6 અંકનો હોવાથી,
$10^6 x=142857 . \overline{142857}$
$10^6 x-x=142857 . \overline{142857}-0 . \overline{142857}$
$999999 x=142857$
$x=\frac{142857}{999999}=\frac{1}{7 \times 13}=\frac{1}{13}$
અતઃ $0.\overline{142857} = \frac{1}{13} $

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