Find : `(4-1/n)+(7-2/n)+(10-3/n)+` upto `n` terms

(1-1/n) + (1 - 2/n) + (1 - 3/n)+ …… upto n terms = ?

Find the sum (1-1/n)+(1-2/n)+(1-3/n) +........upto n terms.

Find the sum, (i) 4-(1)/(n)+4-(2)/(n)+4-(3)/(n) …………upto n terms (ii) 1+(-2)+(-5)+….+(-236) .

Find the sum of the following series up to the specified term n/n+(n-1)/n+(n-2)/n+ …..upto nth term.

Find the sum of 1^1 n + 2^2 (n - 1) + 3^2 (n - 2) + 4^2 (n -3) ……upto 'n' terms.

Prove by the method of induction (1)/(1*2)+(1)/(2*3)+(1)/(3*4)+………… upto n terms =(n)/(n+1) where n in N

The odd value of n for which 704 + 1/2 (704) + 1/4 (704) + ... upto n terms = 1984 - 1/2 (1984) + 1/4 ( 1984) - .... upto n terms is :

2.4 + 4.7 + 6.10+ …. upto (n-1) terms=