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ak=1/(k(k+1)) for k=1,2,3,4,...n then (s...

`a_k=1/(k(k+1))` for `k=1,2,3,4,...n` then `(sum_(k=1)^n a_k)^2=`

A

`((n)/(n+1))`

B

`((n)/(n+1))^(2)`

C

`((n)/(n+1))^(4)`

D

`((n)/(n+1))^(6)`

Text Solution

Verified by Experts

The correct Answer is:
B
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