Fractions to Infinity

Algebra Level 2

∑ n = 1 ∞ 1 x n = 1 9 \sum_{n=1}^\infty \frac{1}{x^{n}}= \frac{1}{9} What is x x if it's a distinct positive integer?


The answer is 10.

Kaizen Cyrus by Kaizen Cyrus , 18, Philippines

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1 solution

Vitor Juiz
Mar 26, 2018

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