If there are `(2n+1)` terms in A.P. , then prove that the ratio of the sum of odd terms and the sum of even terms is `(n+1): n`

Find the sum of n terms of an A.P. whose nth term is (2n+1).

Find the AP in which the ratio of the sum to n terms to the sum of succeding n terms is independent of n .

Find the sum of 'n' terms of an A.P. whose nth term is 2n+1.

The ratio of the sums of m terms and n terms of an A.P. is m^(2) : n^(2). Prove that the ratio of their mth and nth term will be (2m - 1) : (2n-1).

Show that the ratio of the sum of first n terms of a G.P. and the sum of (n+1)th term to (2n)th term is (1)/(r^(n)) .

If the sum of m terms of an A.P. is same as the sum of its n terms, then the sum of its (m+n) terms is

If the ratio of n^(th) terms of two A.P's is (2n+8):(5n-3) then the ratio of the sum of their n terms is

Questions on Sum of n terms in A.P.