4. The sum to co of the series -5, 25,-125, 625,can be written as(a) 2 – InterviewSolution

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4. The sum to co of the series -5, 25,-125, 625,can be written as(a) 2 (-5)hÎŁ_5kk-1(b) ÎŁ5k(c)(d) nok-1

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As the series is in the increasing powers of (-5)Henceanswer will be sum of k from 1 to infinity (-5)^kHence option a

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