[" Find the sum of "n" terms "],[" of "(1-(1)/(n))+(1-(2)/(n))+],[(1-(3)/(n))+cdots]

find the sum of n terms of the series (4-(1)/(n))+(4-(2)/(n))+(4-(3)/(n))+

find the sum of n terms: a(n) = n(n+1)-2

Find the sum of the following. (1-(1)/(n))+(1-(2)/(n))+(1-(3)/(n))+... up to n terms.

If S denotes the sum to infinity and S_(n) , denotes the sum of n terms of the series 1+(1)/(2)+(1)/(4) + (1)/(8)+ cdots , such that S-S_(n) lt (1)/(100) , then the least value of n is

find the sum of n terms of the series (4-1/n)+(4-2/n)+(4-3/n)+...........

Find the sum to n terms : (1)/(2) + (3)/(2^(2)) + (5)/(2^(3)) +…+ (2n-1)/(2^(n))

Find the sum up to n terms :n.1+(n-1).2+(n-2)3+(n-3).4+....

The sum of n terms of the series 1+2 (1 + (1)/(n)) +3 (1+ (1)/(n))^(2) + ….is