In an AP:
(vii) Given `l = 28, S = 144`, and there are total 9 terms. Find a.

In an AP: (i) Given a=5, d=3, a_(n) = 50 , find n and S_(n) (ii) given a=7, a_(13) = 35 , find d and S_(13) . (iii) given a_(12) = 37, d=3 , find a and S_(12) (iv) given a_(3) = 15, S_(10) = 125 , find d and a_(10) (v) given a=2, d= 8, S_(n) = 90 , find n and a_(n) (vi) given a_(n) = 4, d=2, S_(n) = - 14 , find n and a. (vii) given l=28, S= 144, and there are total 9 terms, find a.

In an AP: (vi) Given a_(n) = 4, d = 2, S_(n) = -14 , find n and a.

In an AP: (v) Given a = 2, d = 8, S_(n) = 90 , find n and a_(n) .

In an AP: (ii) Given a = 7, a_(13) = 35 , find d and S_(13) .

In an AP: (iii) Given a_(12) = 37, d = 3 , find a and S_(12) .

In an AP: (iv) Given a_(3) = 15, S_(10) = 125 , find d and a_(10) .

In an AP: (i) Given a = 5, d = 3, a_(n) = 50 , find n and S_(n) .

The sum of the 4^(th) and 8^(th) terms of an AP is 24 and the sum of the 6^(th) and 10^(th) terms is 44. find the first three terms of the AP.

If the ratio of sum of n terms in two A.P' s is 2n : n + 1, then the ratio of 8th terms is

If l = 205 and A.P. 7,13,19,….. . Then find the no, of terms in A.P.