[" Q9: Sum of first "55" terms in an "2" points "],[" A.P.is "3300" ,then its "28" th term "],[" is "^(*)]

Sum of first 55 terms in an A.P.is 3300,find its 28^( th ) term.

Sum of first 55 terms in an A.P is 3300 . Find its 28th term.

" Fifth term of an "A.P." is "7" then sum of first "9" terms is "..........

If the sum of first p terms of an A.P is equal to the sum of the first q terms , then find the first (p+q) terms .

The sum of first P terms of an A.P. is equal to that of the first Q terms. Prove that the sum of first (P+Q) terms is zero.

If the sum of first p terms of an A.P is equal to the sum of first q terms, then show that the sum of its first (p+q) terms is zero . (p ne q) .

If the sum of the first 4 terms of an arithmetic progression is p, the sum of the first 8 terms is q and the sum of the first 12 terms is r, express 3p+r in terms of q.

What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and the last term is 55?

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)