Question

$the \: sequence \: an = \: \frac{1}{n2 } + \frac{1}{ {(n + 1)}^{2} } + ........ \frac{1}{ {(2n)}^{2} }$
​

Answer 1

thesequencean=

n2

1

+

(n+1)

2

1

+........

(2n)

2

1