how to Find the sum of the series 1+2+2^2+2^3+…..+2^n

Find the sum of the series 1+2+2^2+2^3+…..+2^nAnswer : To Find 1+2+2^2+2^3+…..+2^n We know that any series of the from [a+ar+ar^2+ar^3+\ldots\ldots+ar^{n-1}] is called Geometric Progression. Where a is the first term and r is the common ratio of the progression. Therefore…

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