The sum to first n terms of the series 3/5 + \frac{21}{25}+\frac{117}{125} + ... is

Correct Answer is : n + 2n+13×5n−23

n + 2^\frac{n+1}{3\times5^n} - 2/3

n - 2^\frac{n+1}{3\times5^n} - 2/3

n + 2^\frac{n+1}{3\times5^n} + 2/3

n - 2^\frac{n+1}{3\times5^n} + 2/3

AP EAMCET Engineering 20 Apr 2019 Shift 2 Paper

Section: Mathematics

Question : 3 of 160

Marks: +1, -0

The sum to first n terms of the series

117

125

+ ... is

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