\"\"

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The given geometric series \"\".

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The sum of a geometric series is \"\",

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Where \"\" is first term and r is common ratio.

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Method 1

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\"\"           (Substitute \"\")

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\"\"           (Subtract denominator: \"\")

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\"\"              (Evaluate powers: \"\")

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\"\"                    (Subtract numerator: \"\")

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\"\"                 (Divide: \"\")

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\"\"                             (Multiply: \"\")\"\"

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The sum of the geometric series is \"\".