Question

If nth term of series is (n^2+1)/(n+2)(n+3),then 7th term is​

Answer 1

Answer:

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Answer 2

Answer:

Here Tn =2n−1

Thus, Sum, Sn =∑T n =2∑n−∑1=

n(n+1)

2 _____ −n=n2

2

answers is n2