CUSAT 2018 BTech Solved Paper

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Question : 65 of 250

Marks: +1, -0

Find the sum of the series
(1+2)+(1+2+22)+(1+2+22+23)+... upto n terms

2n+2−n−4
2(2n−1)−n
2n+1−n
2n+1−1

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