adrianacastel2 adrianacastel2

05-01-2017
Mathematics

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What is the sum of the geometric series 1500 + 150 + 15 + 1.5 + 0.15 + 0.015, ... ? in a fraction

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LammettHash LammettHash

05-01-2017

[tex]1500+150+15+\cdots=1500\left(1+\dfrac1{10}+\dfrac1{100}+\cdots\right)[/tex]

The geometric sum can be written as

[tex]\displaystyle1500\sum_{n=0}^\infty \frac1{10^n}=\frac{1500}{1-\frac1{10}}=\dfrac{5000}3[/tex]

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