GATE Electronics and Communications (EC) 2013 Solved Paper

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Question : 7 of 65

Marks: +1, -0

Find the sum to n terms of the series 10 + 84 + 734 + _ _ _ _ _

$\;{9(9^{n}\;+\;1)}/{10} + 1$
$\;{9(9^{n}−1)}/{8} + 1$
$\;{9(9^{n}−1)}/{8} + n$
$\;{9(9^{n}−1)}/{8} + n^{2}$

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