\"\"

\

The first term in geometric sequence is \"\".

\

The common ratio is \"\".

\

The sum of \"\" terms is \"\".

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Find \"\".

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Formula for the sum of a finite geometric series is \"\".

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\"

\

\"\".

\

Therefore, the correct choice is option (a).

\

\"\"

\

The correct choice is option (a).