In an AP :
given d = 5, `S_(9) = 75`, find a and `a_(9)`.

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

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

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

In an A.P: (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 d= 5, S_(9) = 75 , find 'a' and a_(9) . (vi) Given a=2, d=8, S_(n) = 90 , find 'n' and a_(n) . (vii) Given a=8, I=a_(n) = 62,S_(n) = 210 , find 'n' and 'd'. (viii) Given a_(n) = 4=I, d=2, S_(n) = -14 , find 'n' and 'a'. (ix) Given a=3, n=8, S_(n)= 192 , find 'd'. (x) Given I= 28, S_(n) = 144 , and there are a total 9 terms find 'a' .

In an AP:(v) given d=5, S_9=75 ,find a and a_9 .

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

In an A.P: given a = 5 , d = 3, a_(n) = 50 , find n and S_(n)