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EasyCalculus & Linear AlgebraAcceptance 86%

Geometric Series

Goldman Sachs

What is the sum $1 + \tfrac13 + \tfrac19 + \tfrac1{27} + \cdots$ ?

Approach

Use $\frac{1}{1-r}$ for $|r|<1$ .

Answer

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The answer is 1.5. Sign in free for the full worked solution and to check your own answer.

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