Question

Write the nth term of an A.P. the sum of whose n terms is S_n.

Answer 1

We are given an A.P. the sum of whose n terms is S_n. 

So, to calculate the n^th term of the A.P. we use following formula,

a_n = S_n - S_n-1

So, the n^th term of the A.P. is given by a_n = S_n - S_n-1.