The first term of an A.P. is `a` and the sum of first `p` terms is zero, show tht the sum of its next `q` terms is `(a(p+q)q)/(p-1)dot`

The first term of an A.P. is 'a' and sum of first p terms is zero. Show that the sum of next q terms will be (a(p+q)q)/(1-p).

The first term of an A.P. is 100 and the sum of whos f first 6 terms is 5 xx the sum of the next 6 terms,then the c.d. is

If the sum of first 10 terms of an A.P is 60 and sum of first 15 terms is -165 then find the sum of its n terms

In an AP of which 'a' is the Ist term, if the sum of the Ist p terms is equal to zero, show that the sum of the next q terms is -((aq(p + q))/(p - 1))

The sum of first p- terms terms of an A.P.is q and the sum of first q terms is p,find the sum of first (p+q)

If the first term of an A.P. is 2 and the sum of the first five terms is equal to one fourth of the sum of the next five terms, find (i) the 20th term (ii) the sum of first 30 terms.

In an A.P., if 1 is the first term and the sum of the are 1 first p terms is zero, then the sum of the next q terms is

If the sum of p terms of an A.P. is q and the sum of q terms is p , then the sum of the p+q terms will be