Find the sum of the infinite series — task. Mathematics State Board, Class 10.

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Find the sum of the series 9 \(+\) 8.1 \(+\) 7.29 \(+\)\(…\) in G.P.

The sum of the series \(=\)

[Note: Round off the answer obtained to two decimal places.]

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4. Find the sum of the infinite series