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2019 AMC 10B Problems/Problem 21

Revision as of 23:45, 13 February 2019 by Bill9000 (talk | contribs) (Created page with "We know that <math>\dfrac14 + \dfrac14 ^ 2 + \dfrac14 ^ 3 + \cdots = \dfrac13.</math>")
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We know that $\dfrac14 + \dfrac14 ^ 2 + \dfrac14 ^ 3 + \cdots = \dfrac13.$

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